Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
  • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
  • D06B23/04—Carriers or supports for textile materials to be treated
  • D06B23/042—Perforated supports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
  • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
  • B65H75/18—Constructional details
  • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
  • B65H75/241—Constructional details adjustable in configuration, e.g. expansible axially adjustable reels or bobbins
• • 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

• a tube for yarn bobbins A tube for yarn bobbins.
• the present invention relates to a tube for yarn bobbins of the type having variable length in axial direction.
• Tubes for yarn bobbins are devices comprising a perforated cylindrical or frusto-conical surface for retaining the yarn reeled on the tube while said yarn is exposed to a liquid treatment, especially a dyeing with a subsequent drying, in an apparatus, in which several tubes are located end to end on perforated distributor pipes through which the treatment liquid is pumped out through the yarn.
• Tubes for yarn bobbins must eapecially meet the following three requirements:
• the oldest known tube which is used today is a perforated metal cylinder. Tubes of this type are placed on the distributor pipes with discs between every two tubes and are compressed by means of a cap screwed on the end of the distributor pipe, thus providing a seal between the metal cylinder and the intermediary discs.
• These tubes provide the most uniform dyeing of yarn, but they have the disadvantage that they are rather expensive and allow only a very bad filling of the space in the dyeing apparatus, partly because the intermediary discs take up room and partly because the tubes do not permit a compression of the yarn bobbins. In fact these tubes permit a filling of the yarn dyeing apparatus which is only well over half of what can be obtained with certain other types of tubes.
• tubes have been produced of variable length in axial direction, so that the yarn bobbin can be compressed.
• a tube may for instance be a compressible metal spiral as described in Danish patent specification No. 75,931, or two metal cages displaceable relative to each other and locked together with a ring, and which are kept in a stretched position by a helical spring aa described in US patent specification No. 2,818,222.
• This type of tubes permits a good filling of the space in the dyeing apparatus, but is expensive due to the nature of the material since in practice only stainless steel can be used, and such tubes give rise to uneven dyeing.
• a second type of tubes of variable length in axial direction is the type disclosed in British patent specificatio No. 1,169,962, and it is made of an injection moulded plastic material in which the cylinder surface is formed by a row of concentric rings connected by strings extending obliquely relative to the axial direction and being of such dimensions that the tube may be compressed in the axial direction by virtue of the resilience of the material.
• These tubes have the advantage to be very inexpensive, but are in practice only disposable tubes because the plastic material undergoes a heat set at the high temperatures used for dyeing and drying, and therefore the tubes is either to be discarded or to be straightened again after every use after being heated in hot-air. Furthermore it is not possible either by the use of these tubes to obtain a desired uniformity of the dyeings.
• the mean value of the measurings is 50% dye liquid, and in extreme cases 80 to 90% may be measured. These figures apply to yarn of wool/acryl mixtures at temperatures of 40 to 100°C.
• a tube which for instance is fixed in a length of 100 mm at 100°C, shrinks 1.25 mm at cooling to 30°C.
• a space of 1.25 mm is present between two adjacent bobbins. The result is uneven dyeings, especially in cases where after completed dyeing and shade control it is found necessary to cool the dye in order to add more dyeatuff.
• the tube according to the present invention is of the type with variable length in axial direction, and which is made of a moulded plastic material and composed of a number of concentric rings and strings extending therebetween and being of such dimensions that the tube may be compressed in axial direction by virtue of the resilience of the material, and where the two end rings are differently shaped and with such profiles that one end ring presents an outer cylinder or conical surface fitting in an inner cylinder or conical surface on the second end ring, and where both end rings are provided with an outward radial flange.
• the tube according to the invention is characterised in that all the rings are provided with, arms extending-along generatrixes.
• the strings connecting the rings are shaped as springs which when stretched extend substantially parallel to the generatrixes but which are located under the cylindrical or conical surface formed by the arms.
• the arms constituting the supporting means for the yarn reeled may be given such dimensions that they possess a great rigidity and strength, and the strings having no supporting function are only to hold the end rings and the intermediary rings together and to determine the stretched length of the tube during the reeling process, and may be given such modest dimensions that the loss of resilience on account of the heat set of the plastic material is reduced.
• the arms two by two on the opposing sides are provided with knobs projecting beyond the centre line between the arms and comprising a surface forming a large angle with the axis of the tube so that they lock the tube in the stretched position when the knobs have passed each other and said surfaces bear against each other.
• strings are according to the invention characterised in that the strings extend rectilinearly between the rings and have a single S-shaped bend.
• Fig. 1 is an axial sectional view of one half of a tube according to the invention
• Fig. 2 illustrates part of the developed cylinder surface of a tube, seen from the inner side of the tube
• Fig. 3 illustrates the part of Fig. 2 with the cylinder surface in the compressed state
• Fig. 4 illustrates an alternative embodiment of an end ring
• Fig . 5 illustrates an embodiment of the end rings on a conical tube
• Fig. 6 illustrates an embodiment of the arms, seen towards the cylinder surface
• Fig. 7 illustrates on a larger scale an embodiment of a string.
• Fig. 1 illustrates one end ring 1, intermediary rings 2, and the second end ring 3.
• the end ring 1 is shaped with an inner cylinder surface 4 and an outward radial flange 5, whereas the end ring 3 is shaped with an outer cylinder surface 6 of the same diameter as the inner cylinder surface 4 and comprising an outward radial flange 7.
• the outer cylinder surface 5 on one tube is pushed into the inner cylinder surface 4 of a second tube, the outward flanges 5 and 7 forming stops for the axial displacement and furthermore limiting means for the yarn when it is reeled on the tube.
• Arms 9 extend from the rings 1, 2, and 3, said arms extending along generatrixes in the cylindrical or slightly conical surface of the tube.
• the outer side 10 of these arms forms the surface carrying the reeled yarn.
• the strings connecting the rings are shaped as springs 11, which when stretched, cf. Fig. 2, extend substantially parallel to the generatrixes, but which lie under the cylindrical or conical surface 10 formed by the arms 9 in such a manner that they have no supporting function.
• the compressed tube is illustrated in Fig. 3.
• the tube is moulded in the state illustrated in Fig. 3, i.e. with the springs 11 in the shown huddled zigzag-form.
• the spring When the tube is stretched the spring does not straighten completely but will take the shape illustrated in Fig. 2.
• the springs are only stretched in "the cold state", i.e. during the reeling of the yarn and during storage, and they will retain the tendency to take the shape shown in Fig . 4 when the tube is compressed , and in this shape they are exposed to temperatures of up to about 100°C and cooled as well.
• the variable length of the tube in axial direction is therefore to a far slighter extent than in the known tubes based on the resilience of the plastic material, and no problem arises in connection with the straightening of the tube after each use.
• Fig. 4 illustrates an alternative embodiment of one end ring 3.
• the part 12 of the ring comprising the outer cylinder surface 6 is a separate portion pressed into the part 13 of the ring comprising the outward flange 7.
• the part 12 is moulded with a slot 14 and with a slightly larger diameter than the diameter of the inner cylinder surface 4, which provides a better possibility of obtain ing a tight and close fitting between the surfaces 4 and 6.
• Fig. 5 illustrates, an embodiment of the end rings 1 and 3 on a slightly conical tube.
• Fig. 6 illustrates an embodiment of the arms 9 in which they two by two on the oppoaing aides are provided with knobs 16 projecting beyond'the centre line between the arms.
• the cross-section of the knobs is triangular.
• On the sides facing each other these knobs comprise oblique surfaces 17 which form a small angle with the axis of the tube and which when the tube is stretched slide past each other, the resilience of the arms permitting a slight bend.
• knob surfaces 18 When the knobs have passed each other the arms curve back into the neutral position, and knob surfaces 18 forming a larger angle with the axis of the tube then bear against each other and maintain the tube in the stretched position. In this stretched position the tubes are arranged in the reeling machine.
• a second possibility of maintaining the tubes, stretched on the reeling machine is to provide the end rings with inner projections engaging annular grooves on the mandrel of the reeling machine located with a mutual distance corresponding to a desired height of bobbin, e.g. also a height corresponding to a completely stretched tube.
• Fig . 7 illustrates a particularly advantageous, embodiment of a tube according to the invention, illustrated in the coitrpressed state, said state corresponding to the shape in which the tube is moulded.
• an S-shaped string 15 is provided which at both ends extend into a heavier profile 19 extending rectilinearly along a generatrix in the cylinder surface between two rings.
• the string illustrated in Fig. 7 possesses the advantage that it is shorter, i.e. its total length is smaller, and that it nevertheless provides the same possibility of extension of the tube.
• Figs. 2 and 3 the tube is shown with springs 11 connecting the rings 2 between each set of arms 9.
• springs 11 connecting the rings 2 between each set of arms 9.
• the springs are not to carry the yarn and therefore need not be so thick that the tube is rigid and difficult to straighten after use.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Storage Of Web-Like Or Filamentary Materials (AREA)
• Treatment Of Fiber Materials (AREA)
• Spinning Or Twisting Of Yarns (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8113278

Family Applications (1)

Country Status (10)

Cited By (4)

Families Citing this family (5)

Citations (12)

Family Cites Families (2)

• 1979
  • 1979-06-20 DK DK257279A patent/DK144213C/da not_active IP Right Cessation
• 1980
  • 1980-05-28 WO PCT/DK1980/000033 patent/WO1980002832A1/en active IP Right Grant
  • 1980-05-28 DE DE19803049632 patent/DE3049632C2/de not_active Expired
  • 1980-05-28 GB GB8103370A patent/GB2063216A/en not_active Withdrawn
  • 1980-05-28 AT AT0906380A patent/AT370457B/de not_active IP Right Cessation
  • 1980-05-28 JP JP50141880A patent/JPS56500776A/ja active Pending
  • 1980-06-04 IT IT22539/80A patent/IT1131258B/it active
  • 1980-06-09 ES ES1980258047U patent/ES258047Y/es not_active Expired
  • 1980-06-10 BE BE0/200969A patent/BE883735A/fr unknown
  • 1980-12-30 EP EP80901183A patent/EP0030951B1/en not_active Expired

Patent Citations (12)

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