US3606975A - Method of feeding yarn to a knitting place on a textile machine - Google Patents

Method of feeding yarn to a knitting place on a textile machine Download PDF

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Publication number
US3606975A
US3606975A US1635A US3606975DA US3606975A US 3606975 A US3606975 A US 3606975A US 1635 A US1635 A US 1635A US 3606975D A US3606975D A US 3606975DA US 3606975 A US3606975 A US 3606975A
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Prior art keywords
yarn
drum
winding
storing drum
storing
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US1635A
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English (en)
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Karl Isac Joel Rosen
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • 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

  • FIG.1 METHOD OF FEEDING YARN TO A KNITTING PLACE ON A TEXTILE MACHINE Filed Jan.-9. 1970 3 Sheets-Sheet l FIG.1
  • the yarn at the winding-on stage bears against a free surface section of the storing drum being moved in the axial direction of the storing drum by pressure at least on the last formed winding by means of a sliding element which is movable in the longitudinal direction of the surface of the drum and/ or forms an acute angle between itself and the outer face of the said drum at least over part of the drum periphery and finally being withdrawn from the storing drum in an axial direction.
  • An irregular ball of yarn having one or more layers at least in parts is formed by reducing the winding tension of the yarn relative to the winding tension to be maintained in a one-layered winding as a result of the pressure which is effective in an axial direction.
  • the invention relates to a method of feeding yarn to a knitting position on a textile machine, such as a knitting, weaving or winding machine, wherein the yarn is drawn off a bobbin and tangentially wound under tension onto a storing drum in the form of a plurality of windings, the yarn in the starting zone being placed against a free section of the surface of the storing drum, transported in an axial direction of the drum by pressure on at least the last winding by means of a sliding element which is movable in a longitudinal direction of the surface of the drum at least over part of the drum periphery, and finally being withdrawn from the drum in an axial direction.
  • the yarn is to be fed to the knitting position on a textile machine, for example, a weaving, knitting or winding machine, said yarn having a tension which is as low and as constant as possible.
  • the storing drum is usually associated with a monitoring device which initiates the winding operation when the yarn supply falls below a given limit on the drum, and stops the winding operation when the yarn supply exceeds an upper limit.
  • a method of this kind is already known.
  • a spoke Wheel inside the storing drum is inclined relative to the longitudinal axis of the drum and is pivotably mounted about a transverse axis, the arms of said spoke wheel penetrating openings in the wall of the drum. Due to the inclined position of the spoke wheel, the arms form an acute angle to the surface of the drum over part of a periphery.
  • the first yarn winding engages the arms of the spoke wheel having a greater inclination so that the former is displaced by the arms in an axial direction, thereby also moving the previously formed winding.
  • the axial movement of the yarn winding is, moreover, produced by the spoke wheel which is spring-loaded in the pivoting direction.
  • This known method only relates to a winding position on the storing drum.
  • the yarn If the yarn is then withdrawn from the storing drum, it offers a slightly greater resistance to withdrawal in places where projecting fibers are backed by the following winding. During yarn withdrawal there is produced so-called tugging, i.e., irregular variations in tension which make it impossible to ob 'tain the desired constant and low yarn tension.
  • a yarn feeding device wherein an intermediate yarn storing means having a plurality of layers is formed on a storing drum.
  • a tightly wound bobbin is formed on the storing drum by means of a cross winding arrangement and displaced in the axial direction of the storing drum by means of a conical extension thereon.
  • the intermediate bobbin must be a form of cone-shaped bobbin, the withdrawal end of which projects above the drum in an exposed position.
  • a conical winding body which is displaced on the intermedaite bobbin during the increasing formation of the latter and is then removed must first be mounted on the storing drum. This method may be practicable with winding machines, but it is not possible with most other textile machines to introduce an additional winding body onto the drum and then to remove it later at the beginning of each operation and whenever the yarn is changed.
  • the problem underlying the invention is to provide the method of the type described above so that a relatively large yarn supply can be formed on a storing drum of a given size and a low and constant tension can be maintained during yarn withdrawal.
  • the invention abandons the previously pursued prin ciple of forming only one layer or a constantly wound intermediate bobbin on the storing drum and instead proposes an irregular ball of yarn having two or more layers on the storing drum. It has been unexpectedly found that an extremely constant and low tension prevails during yarn withdrawal despite the formation of the ball of yarn on the drum. This is presumably due to the fact that a plurality of layers is firstly formed in the relatively loosely wound ball of yarn in the feed zone as a result of the axial pressure exerted on the last winding to be fed. However, the layer becomes thinner again in the direction of the point of withdrawal and becomes disentangled immediately before withdrawal to the extent that there is essentially only one layer of yarn windings lying relatively loosely in juxtaposition.
  • the yarn is drawn from this one-layer section, in which it is obvious that the loosely lying yarn windings do not grip one another at this point and, in particular, no laterally projecting fibers adhere to the surface of the drum.
  • another advantage is obtained in that a fairly large yarn supply can be formed on a drum of given size because the yarn is stored on the drum in a plurality of layers forming a ball. In this way the winding operation does not need to be stopped and started as frequently as in the past.
  • the magnitude of yarn winding tension to be provided when the method according to the invention is carried out depends on the quality of the yarn, but usually lies between 0.3 g. and 10 g. approximately. Optimum results are obtained when most yarns have tensions lying between 1 g. and 6 g. approximately.
  • FIG. 1 shows a side view of a yarn feeding and storing device suitable for carrying out the method according to the invention
  • FIG. 2 shows a schematic view of the storing drum according to FIG. 1, the yarn supply having been wound
  • FIG. 3 shows a schematic cross section through the yarn winding in the starting and finishing zones of the yarn
  • FIG. 4 shows a view corresponding to FIG. 3 in the central section of the yarn winding
  • FIG. 5 shows an enlarged longitudinal section through the yarn winding.
  • FIG. 1 shows a bobbin 2 mounted about the vertical pin 3 on a carrier arm 1 which is connected to an unshown frame of a textile machine, for example, a knitting, weaving or winding machine.
  • a yarn F is drawn upwards off this bobbin and tangentially fed through or by a plurality of yarn guiding elements 4, 5 and 6 of a storing drum which is generally designated by reference numeral 7.
  • the storing drum 7 is rotatably mounted in the lower side of the carrier arm 1 and can'be rotatably driven in the winding direction by a motor which is not shown In the illustrated embodiment it has a circular cylindrical edge provided with rods acting as the actual winding member.
  • the yarn is wound onto the outer walls of the rods which form the cage.
  • a spoke wheel 9 which is not visible in detail in the drawing, but can be seen in FIG. 5, is mounted inside the storing drum and inclined relative to the longitudinal axis of the drum 7 and subjected to stress by a spring F in the direction of inclination.
  • spoke arm's 9a penetrate the rods 7a of the storing drum and are connected at their free ends by a sliding ring-9b which bears tightly against the outer face of the rods 7a in the vicinity of the drum 7 to which the yarn F is fed.
  • the spoke wheel 9 and the sliding ring 911 are pivotable in the direction of the double arrow P.
  • the electric motor of the drive of the storing drum is controlled by the pivoting movement of the spoke wheel through a micro switch.
  • a yarn supply V which is shown by broken lines in FIG. 1 is formed on the storing drum 7.
  • this supply reaches an upper limit, its resistance to displacement along the drum is increased by the sliding ring 9b of the spoke arm 9a to such an extent that the sliding ring and the spoke wheel are pivoted whereupon the drive of the drum is switched off. If the yarn supply V falls below a given limit, the sliding ring can pivot downwards again with the spoke wheel, thereby switching the drive of the drum on again.
  • the yarn F is drawn from the storing drum 7 by a retarding ring 10 which surrounds the lower edge of the drum 7 with a resilient arrangement.
  • the section of yarn unwinding in an axial direction is designated by reference Fa in the drawing and is guided through an eye 11 to a working position on the textile machine.
  • the section of yarn being wound on tangentially is designated by reference Fz.
  • FIGS. 2-5 Details of the winding on and withdrawing of the yarn F from the storing drum 7 can be seen in FIGS. 2-5.
  • the section of yarn Fz being wound on engages on a free surface section 7' of the storing drum.
  • the first winding to be formed is displaced in the axial direction of the drum 7, downwards in the drawing, by the inclined sliding ring 9b or the spoke arms 9a.
  • the yarn supply lying in front is displaced by the pressure exerted by the first winding and naturally offers frictional resistance to this displacement.
  • the section of yarn Fa is withdrawn from the lower end of the yarn supply V.
  • the section of yarn Fz is wound onto the storing drum 7 at a low tension of, for example, 0.5 g. by corresponding adjustment of the yarn retarding means 8.
  • the first winding W of the yarn bears relatively uniformly against the periphery of the drum 7; the windings, however, are irregularly deformed by the increasing displacement of the yarn supply along ,7 the drum 7 and therefore the increasing frictional resistance, for example, as shown in the case of a winding W in FIG. 4.
  • Parts of the winding W engage on the surface of the drum 7, but extend through other sections at a distance from the drum surface, then return towards the surface, etc.
  • winding tension which is necessary to form a ball, of the type illustrated in cross section in FIG. 5, on the storing drum 7 depends on the quality of yarn.
  • the most advantageous winding tensions for yarns of different qualities are listed below:
  • the invention is not limited to the illustrated embodiment.
  • the invention may also be applied when the storing drum 7 is stationary and the yarn is wound thereon by a rotating winding arm.
  • the storing drum can also have a dilferent form; for example, it can be a closed cylinder having a polished surface.
  • the cross-sectional shape of the storing drum is unimportant; the circular shape could for example be replaced by any desired polygonal shape.
  • the axial movement of the yarn supply V can also be eifected by means other than the sliding ring 9b.
  • a sliding element can engage in longitudinal grooves of said drum.
  • the winding operation could also be controlled by other arrangements in place of the described spoke wheel.
  • there may be provided a photoelectric control device which operates by light reflected from the surface of the storing drum.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
US1635A 1969-01-22 1970-01-09 Method of feeding yarn to a knitting place on a textile machine Expired - Lifetime US3606975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1903133 1969-01-22

Publications (1)

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US3606975A true US3606975A (en) 1971-09-21

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US1635A Expired - Lifetime US3606975A (en) 1969-01-22 1970-01-09 Method of feeding yarn to a knitting place on a textile machine

Country Status (9)

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US (1) US3606975A (enrdf_load_stackoverflow)
AT (1) AT321444B (enrdf_load_stackoverflow)
CH (1) CH498767A (enrdf_load_stackoverflow)
CS (1) CS162702B2 (enrdf_load_stackoverflow)
DE (1) DE1903133B1 (enrdf_load_stackoverflow)
ES (1) ES375243A1 (enrdf_load_stackoverflow)
FR (1) FR2028853A1 (enrdf_load_stackoverflow)
GB (1) GB1239182A (enrdf_load_stackoverflow)
SE (1) SE362904B (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3759455A (en) * 1972-09-28 1973-09-18 Wesco Industries Corp Filament feeding and storage device
US3782661A (en) * 1971-12-21 1974-01-01 Wesco Industries Corp Filament feeding and storage device
US3791598A (en) * 1970-07-18 1974-02-12 Sobrevin Thread delivery device
US3831875A (en) * 1972-06-16 1974-08-27 Iro Ab Thread storage and supply device for textile machines
US4028911A (en) * 1974-12-28 1977-06-14 Firma Gustav Memminger Verfahrenstechnik Fuer Die Maschenindustrie Inclined pin wheel for yarn storage drum
US4691873A (en) * 1986-06-06 1987-09-08 Alan Gutschmit Strand storing and delivering device
US6270032B1 (en) 1999-04-03 2001-08-07 Jen Hui Chen Variable or steady yarn feeding apparatus
US6283397B1 (en) 1999-01-22 2001-09-04 Jen Hui Chen Variable and steady yarn feeding apparatus
CN102454032A (zh) * 2010-10-29 2012-05-16 吴江市中仕服饰有限公司 送纱装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19535756A1 (de) * 1995-09-26 1996-04-11 Erich Roser Liefervorrichtung für fadenartiges Wickelmaterial
BE1026405B1 (nl) * 2018-06-20 2020-01-30 Nv Michel Van De Wiele Garenvoorraadinrichting voor een garenverwerkende machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791598A (en) * 1970-07-18 1974-02-12 Sobrevin Thread delivery device
US3782661A (en) * 1971-12-21 1974-01-01 Wesco Industries Corp Filament feeding and storage device
US3831875A (en) * 1972-06-16 1974-08-27 Iro Ab Thread storage and supply device for textile machines
US3759455A (en) * 1972-09-28 1973-09-18 Wesco Industries Corp Filament feeding and storage device
US4028911A (en) * 1974-12-28 1977-06-14 Firma Gustav Memminger Verfahrenstechnik Fuer Die Maschenindustrie Inclined pin wheel for yarn storage drum
US4691873A (en) * 1986-06-06 1987-09-08 Alan Gutschmit Strand storing and delivering device
US6283397B1 (en) 1999-01-22 2001-09-04 Jen Hui Chen Variable and steady yarn feeding apparatus
US6270032B1 (en) 1999-04-03 2001-08-07 Jen Hui Chen Variable or steady yarn feeding apparatus
CN102454032A (zh) * 2010-10-29 2012-05-16 吴江市中仕服饰有限公司 送纱装置

Also Published As

Publication number Publication date
FR2028853A1 (enrdf_load_stackoverflow) 1970-10-16
DE1903133B1 (de) 1970-01-15
SU376953A3 (enrdf_load_stackoverflow) 1973-04-05
SE362904B (enrdf_load_stackoverflow) 1973-12-27
GB1239182A (enrdf_load_stackoverflow) 1971-07-14
CH498767A (de) 1970-11-15
CS162702B2 (enrdf_load_stackoverflow) 1975-07-15
ES375243A1 (es) 1972-04-16
AT321444B (de) 1975-03-25

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