US3528622A - Transporting arrangement for different yarns - Google Patents

Transporting arrangement for different yarns Download PDF

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Publication number
US3528622A
US3528622A US758951A US3528622DA US3528622A US 3528622 A US3528622 A US 3528622A US 758951 A US758951 A US 758951A US 3528622D A US3528622D A US 3528622DA US 3528622 A US3528622 A US 3528622A
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US
United States
Prior art keywords
transporting
yarns
yarn
different
sleeve
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US758951A
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English (en)
Inventor
Richard Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Franz Morat GmbH
Original Assignee
Franz Morat GmbH
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Filing date
Publication date
Application filed by Franz Morat GmbH filed Critical Franz Morat GmbH
Application granted granted Critical
Publication of US3528622A publication Critical patent/US3528622A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices

Definitions

  • the frictional slipping of synthetic yarns, woolen yarns, cotton yarns, blended yarns, twisted yarns and vtextured yarns, for example, is due to the different surface properties of these yarns so different that transporting rollers according to the prior art cannot produce the same yarn tension in different yarns fed by the transporting rollers to the feeding station.
  • Another object of the invention is to adapt the friction coefficient, or the diameter, or both, of a rotary transporting roller to the properties of the transported yarn.
  • An arrangement according to the invention preferably comprises a plurality of transporting rollers driven by drive means at a high rotary speed and having peripheral transporting surfaces for frictionally engaging and transporting different yarns from a supply station to a working station.
  • the transporting surfaces have different properties selected in accordance with the frictional properties of the respective yarns transported by the same.
  • the result is obtained that upon a variation of the yarn tension at the working station, the different yarns slip on the respective transporting surfaces to substantially the same degree so that all yarns are delivered at a desired tension at the working station.
  • a plurality of transporting rollers is provided for transporting a plurality of different yarns, some of the rollers may have peripheral transporting surfaces of different diameter, and other transporting rollers may have transporting surfaces whose friction coeiicient is different.
  • yarns having little tendency to adhere to the transporting surface are transported by smooth rollers, while yarns which tend to adhere to the transporting surface, should be used with rough transporting surface.
  • Synthetic, smooth and textured yarns tend to adhere to the transporting surface, while twisted yarns, woolen yarns, cotton yarns, and blended yarns have a lesser tendency to adhere to the transporting surface.
  • the determination of the type of transporting surface required by a particular yarn also depends on the question whether the yarn was treated with oil or parain.
  • smooth and rough as applied to the transporting surfaces have a wide scope, and particularly a rough transporting surface may have an extremely fine roughening as compared with a mirror-smooth transporting surface, or may have a very rough surface, or even be provided with transverse grooves or recesses in the transporting surface.
  • the invention permits the adaptation of a set of transporting rollers provided in a knitting machine, for example, to entirely different sets of different yarns in accordance with different patterns.
  • FIG. 1 is a fragmentary schematic elevation illustrating a set of transporting rollers for transporting yarns having different properties to a set of feeding stations of a knitting machine;
  • FIG. 2 is an axial section illustrating a transporting roller according to a preferred embodiment of the invention driven by an electric motor.
  • the inner part 21 is potshaped and has an outer mounting surface on which the inner mounting surface of a sleeve 23 fits.
  • the outer cylindrical transporting surfaces 24a, 24b, 24C, 24d of sleeve 9-12 may be smooth or rough depending on the properties of the respective yarn.
  • the stator of the motor includes a winding 22 mounted on a tube 13 whose rear end has an outer flange 13a fixed to a disc 1S by screws 14.
  • Disc 15 has a central stud 15a secured to a frame 6 by means of a bolt 17.
  • Flange 13a carries a panel 18a for the terminals of conductors 18 connected to winding 22.
  • Tube 13 rotatably mounts a spindle 19 whose rear end denes a seat for a ball 20 constituting a thrust bearing.
  • Spindle 19 is held against axial displacement by a snap ring 31.
  • the free end of spindle 19 is secured to the bottom of the pot-shaped part 21 which consists of a magnetizable material such as steel and is rotated by the lield produced by winding 22.
  • Any sleeve 9 to 12 fits on the pot-shaped inner part 21, and rotates with the same.
  • the sleeves are designated by reference numerals 9, 10, 11 and 12 in FIG. l and are differently constructed in accordance with the different yarn types to be transported by the outer transporting surfaces of the sleeves.
  • Sleeves 9 and 10 have the same outer diameter.
  • Sleeve 11 has a greater outer diameter than sleeves 9 and 10, and the outer diameter of sleeve 12 is greater than the outer diameter of sleeve 11.
  • Sleeve 9 has a mirror-smooth hardened cylindrical transporting surface 24a
  • sleeve 10 has a somewhat rough cylindrical transporting surface 24b which may be pitted by sand blasting
  • sleeve 11 has a smooth transporting surface 24e ⁇ like sleeve 9, but a greater diameter.
  • Sleeve 12 has a rough transporting surface 24d which may have the same friction coefficient as the transporting surface of sleeve which has a smaller diameter.
  • Each of the transporting rollers 5, ⁇ 6, 7, 8 with sleeves 9, 10, 11, 12 transports a different yarn 1, 2, 3, 4 as indicated by different broken lines in FIG. 1.
  • Each yarn is wound in at least one loop about the transporting surface 24 of the respective transporting roller, and more particularly of the respective sleeve.
  • the loop of each yarn is shown to be radially spaced from the outer transporting surface 24a to 24d for the sake of clarity, but it will be understood that the loop of each transported yarn tightly passes about the transporting surface 24 and is in frictional engagement with the same.
  • yarn 1 may be a worsted yarn, yarn 2 a textured yarn, yarn 3 a novelty yarn such as boucle, slub, or nub yarn, and yarn 4 is a smooth synthetic yarn.
  • the smooth yarn 4 cooperates with a transporting surface 24d which has a great diameter and is rough
  • the worsted wool yarn 1 cooperates with a smooth transporting surface 24a having a small diameter as required by the high friction coefficient of yarn 1.
  • the greater diameter of transporting surface 24e of sleeve 11 is selected in accordance with the properties of the novelty yarn 3.
  • the same diameter of the rough transporting surface 24b of sleeve 10 is selected according to the property of the textured yarn 2.
  • the peripheral transporting surface of the transporting rollers 5 to 8 must be adapted to the properties, texture, and frictional coefficient of the respective transported yarn to obtain uniform sliding frictional engagement when the yarns are uniformly tensioned, so that a uniform yarn tension prevails between transporting rollers 5 to 10 and the feeding stations of the knitting machine.
  • Transporting arrangement for different yarns comprising, in combination, drive means; a plurality of transporting rollers driven by said drive means at a high rotary speed and having peripheral transporting surfaces, respectively, for frictionally engaging and transporting different yarns having different frictional properties from a supply station to a working station, said transporting surfaces having different properties selected in accordance with the frictional properties of the respective yarns transported thereby so that upon a variation of the yarn tension at said working station, said different yarns slip on the respective transporting surfaces to substantially the same degree so that all said yarns are delivered at a desired tension at said working station.
  • Transporting arrangement as claimed in claim 2 wherein at least one of said transporting surfaces is smooth, and at least an other one of said transporting surfaces is rough.
  • Transporting arrangement as claimed in claim 1 wherein said transporting surfaces have different friction coetcients selected in accordance with the friction coefficient of the respective transported yarn; wherein said yarns are looped about said transporting surfaces of said transporting rollers, respectively; and wherein said transporting surfaces have different diameters.
  • A6 Transporting arrangement as claimed in claim 5 wherein at least one of said transporting surfaces is smooth, and at least an other one of said transporting surface is rough.
  • At least one of said transporting rollers includes an inner part and an outer sleeve detachably mounted on said inner part for rotation therewith and having said peripheral transporting surface so that by exchange of said outer sleeve for another outer sleeve having a dilferent transporting surface said one transporting roller can be adapted for transporting yarns having different frictional properties.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Sewing Machines And Sewing (AREA)
US758951A 1967-09-13 1968-09-11 Transporting arrangement for different yarns Expired - Lifetime US3528622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1635867 1967-09-13

Publications (1)

Publication Number Publication Date
US3528622A true US3528622A (en) 1970-09-15

Family

ID=5683738

Family Applications (1)

Application Number Title Priority Date Filing Date
US758951A Expired - Lifetime US3528622A (en) 1967-09-13 1968-09-11 Transporting arrangement for different yarns

Country Status (8)

Country Link
US (1) US3528622A (enrdf_load_stackoverflow)
AT (1) AT312146B (enrdf_load_stackoverflow)
CH (1) CH503138A (enrdf_load_stackoverflow)
ES (1) ES358198A1 (enrdf_load_stackoverflow)
FR (1) FR1581864A (enrdf_load_stackoverflow)
GB (1) GB1243842A (enrdf_load_stackoverflow)
PL (1) PL69789B1 (enrdf_load_stackoverflow)
SE (1) SE345293B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004438A (en) * 1974-07-17 1977-01-25 Institut Textile De France Thread feed device for a hosiery knitting machine
US5385310A (en) * 1988-12-31 1995-01-31 Iro Ab Thread feed device
US5461450A (en) * 1993-04-08 1995-10-24 Eastman Kodak Company Apparatus and method for transporting and perforating enlongated strips of material
RU2207974C2 (ru) * 2000-02-15 2003-07-10 Меммингер-Иро Гмбх Фрикционное нитеподающее устройство с возбуждением вибрации

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842115A1 (de) 1978-09-27 1980-04-10 Iro Ab Fadenspeicher- und -liefervorrichtung fuer textilmaschinen
ES8704217A1 (es) * 1986-06-23 1987-04-01 Jumberca Sa Perfeccionamientos en los alimentadores de hilo a maquinas textiles
DE3711558C1 (de) * 1987-04-06 1988-06-23 Sipra Patent Beteiligung Fadenliefervorrichtung fuer Strickmaschinen
GB8804927D0 (en) * 1988-03-02 1988-03-30 Cobble Blackburn Ltd Improvements in/relating to tufting machinery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798593A (en) * 1949-04-28 1957-07-09 American Viscose Corp Strand lacer for reels
US3020621A (en) * 1959-12-03 1962-02-13 Du Pont Draw roll
US3093330A (en) * 1960-04-11 1963-06-11 Morat Gmbh Franz Feeding mechanism for yarn winding and processing machines
US3390840A (en) * 1964-08-28 1968-07-02 Davall & Sons Ltd Device for reeling wire, tape and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798593A (en) * 1949-04-28 1957-07-09 American Viscose Corp Strand lacer for reels
US3020621A (en) * 1959-12-03 1962-02-13 Du Pont Draw roll
US3093330A (en) * 1960-04-11 1963-06-11 Morat Gmbh Franz Feeding mechanism for yarn winding and processing machines
US3390840A (en) * 1964-08-28 1968-07-02 Davall & Sons Ltd Device for reeling wire, tape and the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004438A (en) * 1974-07-17 1977-01-25 Institut Textile De France Thread feed device for a hosiery knitting machine
US5385310A (en) * 1988-12-31 1995-01-31 Iro Ab Thread feed device
US5461450A (en) * 1993-04-08 1995-10-24 Eastman Kodak Company Apparatus and method for transporting and perforating enlongated strips of material
RU2207974C2 (ru) * 2000-02-15 2003-07-10 Меммингер-Иро Гмбх Фрикционное нитеподающее устройство с возбуждением вибрации

Also Published As

Publication number Publication date
GB1243842A (en) 1971-08-25
SE345293B (enrdf_load_stackoverflow) 1972-05-23
AT312146B (de) 1973-12-27
ES358198A1 (es) 1970-04-16
PL69789B1 (enrdf_load_stackoverflow) 1973-10-31
FR1581864A (enrdf_load_stackoverflow) 1969-09-19
CH503138A (de) 1971-02-15

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