US3566622A - Apparatus for forming a roll of fabric continuously with the knitting thereof - Google Patents

Apparatus for forming a roll of fabric continuously with the knitting thereof Download PDF

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Publication number
US3566622A
US3566622A US783992A US3566622DA US3566622A US 3566622 A US3566622 A US 3566622A US 783992 A US783992 A US 783992A US 3566622D A US3566622D A US 3566622DA US 3566622 A US3566622 A US 3566622A
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United States
Prior art keywords
fabric
roll
core
knitting
shaft
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Expired - Lifetime
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US783992A
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English (en)
Inventor
Vincent A Iannucci
Ronald S Schartel
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Boeing North American Inc
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North American Rockwell Corp
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Publication date
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Publication of US3566622A publication Critical patent/US3566622A/en
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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
    • D04B15/88—Take-up or draw-off devices for knitting products

Definitions

  • the fabric be collected in a relatively loose roll of substantially uniform density directly as it is produced by the knitting instrumentality such as a circular knitting machine.
  • a stationary cylinder type circular knitting machine is preferably employed to produce a fabric tube from a heat, settable yarn such as a polymedic yarn as for example nylon, Orlon or Dacron or other synthetic yarns as for example phenolic and acrylic resin yarns and yarns composed of organic derivatives of cellulose. After the knitted fabric tube is formed the fabric is heat set and then unraveled or deknit.
  • the instant invention has for its principal object the provision of means for collecting the fabric in the form of a cored roll through surface contact of the fabric on the core with a drive roll the arrangement being such that neither the increased weight of the roll as it builds up nor other factors have any appreciable effect on the ice relative pressure between the fabric and the drive roll the latter remaining substantially uniform.
  • an apparatus in accordance with the instant invention comprises a fabric collecting means associated with a knitting head the fabric collecting means comprising a core on which the fabric is wound, and a drive roll or the like adapted to rotate the core and bobbin thereon by frictional contact with the outer winding of the fabric.
  • the driving roll is in a relatively fixed position and the core is mounted for traveling movement away from the drive roll along a substantially horizontal path as the diameter of the fabric on the core increases.
  • the core with the fabric thereon is maintained in surface contact with the drive roll under substantially uniform pressure by suitable means such as extending lever arms pivotally mounted at positions remote from the core the lever arms being adapted to bias the core toward the drive roll.
  • FIG. 1 is a front elevational view of an apparatus including multiple knitting heads and a fabric collecting means for each head constructed in accordance with the instant invention
  • FIG. 2 is an end elevational view of the apparatus of FIG. 1;
  • FIG. 3 is a sectional view on an enlarged scale taken on the line 33 of FIG. 1 with parts broken out for clearness of illustration;
  • FIG. 4 is a detail view on an enlarged scale of a portion of the apparatus illustrated in FIG. 1.
  • the yarn may be a linear polymede or other type of thermoplastic yarn such as vinyl or acrylic resin yarn or a yarn composed of an organic derivative of cellulose or the like.
  • the apparatus preferably comprises a plurality of knitting heads 10 supported by a frame indicated generally at 11, means indicated generally at 12 for drawing off the fabric of each head as the fabric is knit and means indicated generally at 13 for collecting the fabric of each head in the form of a roll said last named means incorporating the improvements of the instant invention.
  • the knitting heads may be of any suitable construction they are preferably of the type shown and described in the co-pending application of Moyer et al. Ser. No. 515,555, filed Dec. 22, 1965, now Pat. No. 3,421,344, issued Jan. 14, 1969.
  • each knitting head includes a stationary needle cylinder, needles mounted therein for reciprocation through a knitting wave, and a cam cylinder mounted for rotation about the needle cylinder and carrying the cams carried to cause the needles to move through their knitting motions, none of said known parts being shown a detail.
  • Each knitting head is preferably driven by an individual motor (not shown).
  • the apparatus illustrated incorporates four of the knitting heads in two rows the heads being supported in elevated positions on the frame 11. As will be understood the rows may contain a greater or lesser number of heads as desired.
  • a yarn rack indicated generally at 14 is supported from the frame 11 above the knitting heads the yarn rack having a double row of pirn holders 15 on which yarn pirns 16 are carried there being one or more pirns for each knitting head.
  • Each pirn provides the yarn supply for a yarn feed finger (not shown) of its associated knitting head the yarn being drawn through guides 17 by a feed roll 18 of any suitable type.
  • the yarn leads from the feed roll through a guide 20 to the yarn feed means (not shown) of the knitting head.
  • a fabric spreader 21 suitably of the type illustrated in Pat. No. 3,333,441, previously referred to, is preferably provided in the path of the fabric below each knitting head, the spreader being inserted within the fabric tube and serving to spread the fabric and form a flattened tube thereof.
  • Fabric take-off 12 may be of any suitable or conventional type but preferably is of the construction illustrated in said Pat. No. 3,333,441 in which one of the rolls between which the fabric is confined is positively driven at a surface speed somewhat in excess of the rate of fabric production with the result that slippage occurs between the driven roll and the fabric.
  • each collector means includes a cylindrical core 23 having a length somewhat in excess of the width of the flattened tube which is to be wound thereon.
  • the core is of the type conventionally employed for the formation of fabric rolls and includes suitable means (not shown) for releasably attaching the end of the fabric thereto.
  • a shaft 24 extends axially of the core and is fixed thereto for rotation therewith.
  • Rollers 26 are mounted for rotation on extending ends of the shaft in anti-friction bearings of any suitable type, the positions of the rollers being fixed axially of the shaft by sleeves 27 and snap rings or other conventional means 30. Rollers 26 ride on horizontal tracks 31 formed by the upper edges of brackets 32 the brackets being supported in fixed position on the machine frame (see FIGS. 3 and 4). The tracks 31 are provided with upwardly extending flanges 33 to confine the paths of movement of the rollers.
  • a common drive roll 34 for the several fabric collecting means is carried by a shaft 35 mounted for rotation in suitable bearings, one being shown at 36 in FIG. 1, supported by the machine frame.
  • Drive roll 34 is provided with a cork or other friction surface for driving contact with the fabric to be wound on the cores.
  • Shaft 35 and hence drive roll 34 is driven in a counterclockwise direction, as
  • a motor 37 through a gear reduction unit 38 having an output shaft 40 carrying a sprocket 41, a sprocket 42 secured to an extending end of shaft 35 and a sprocket chain 43.
  • the motor and sprocket chain also serves to drive the driven rolls of the draw-off means 12 for the several knitting heads.
  • the driven rolls of the draw-offs on the opposite sides of the machine are carried by common shafts 44 and 45 respectively the shafts being supported in suitable bearings in the framework of the machine, the two shafts carrying sprockets 46 and 47, respectively.
  • Sprocket chain 43 leads from sprocket 41 around an idler sprocket 50 supported for rotation on a stub shaft 51 projecting from the machine frame and from thence around sprockets 46 and 47 (see FIGS. 1 and 2).
  • the sprocket chain, sprockets and other elements of the driving mechanism are preferably enclosed within a housing 48.
  • each fabric collecting means for biasing the core of each fabric collecting means toward drive roll 34 to maintain the outer surface of the roll of fabric on the core in frictional contact with the drive roll under substantially uniform pressure as the roll of fabric builds up.
  • This means comprises a pair of arms 52 positioned to have their upper ends projecting past and in alignment with collars 27 on shaft ends 25. The lower ends of the arms are affixed to a bracket 54 the bracket having a bearing sleeve 55 in which is received a horizontal shaft 56. The projecting ends of shaft 56 are secured in fixed positions in brackets 32, as by set screws 57.
  • Shaft 56 extends at right angles to tracks 31 and its center line lies in the vertical plane of the halfway point of travel of shaft 24 along the tracks as the roll of fabric builds up from its initial turn on the core to a fully wound roll of the largest desired diameter.
  • Bearing sleeve 55 which is dimensioned for free rotation or rocking movement on shaft 56 is confined against longitudinal shifting movement on the shaft by collars 60 secured to the shaft as by set screws 61.
  • the upper ends of arm 52 are preferably recessed or cut back to define edge portions 62 for contact with the collars 27 on shaft 25.
  • a rod or lever arm 63 projects from the bearing sleeve in a direction diametrically opposite to that of arms 52, a threaded end of the rod being received in a threaded opening in a boss 64 and secured in adjusted position therein by a lock nut 65.
  • Rod 63 carries a counter balance weight 66 bored to receive the rod. The weight is adapted to be secured in any adjusted position on the rod by a set screw 69.
  • a second rod or lever arm 67 similarly has an end threadably received in a threaded opening of a boss 68 projecting from bearing sleeve 55 at right angles to boss 64, rods 67 and 63 hence also projecting at right angles to each other.
  • Rod 67 is adapted to carry a weight 70 bored to receive the rod, the weight being securable in any adjusted position on the rod by a set screw 74.
  • the lengths of arms 52 and of rods 63 and 67 and the masses of said parts and of the associated elements including bracket 54 and weight 66 in its adjusted position on rod 63 are such that, with weight 70 removed from rod 67, the system is in equilibrium, that is in the absence of an outside force arms 52 will remain in any position to which they are rotated.
  • the distance between shaft 56 and the collar contacting edge portions 62 bears such relationship to the distance that the portions 62 travel during the build up of the fabric roll from the bare core 23 to a fully wound roll that the angular movement of the arms is relatively small and preferably does not exceed thirty degrees.
  • a latch lever 71 is suitably pivotally mounted as at 72 on a rod 73 projecting inwardly from one of the brackets 32 (the right-hand bracket as illustrated in FIG. 4) the latch lever having an abutment surface 75 adapted to bear against the inner wall of bracket 54 and maintain arms 52 in outer rotated positions when for example the particular knitting head served by a fabric collecting means is idle.
  • a switch means 76 see FIG.
  • the knitting heads or a selected one or more of the knitting heads, are operated to knit suflicient fabric to reach their respective cores 23 the end of each of such fabrics being then secured to its associated core in any suitable manner.
  • Latches 71 associated with the active knitting heads are then released permitting arms 52 under the influence of weights 70, to swing in a direction, counterclockwise for the right-hand units and clockwise for the left-hand units as viewed in FIG. 3, to bring the cores into contact with drive roll 34, rollers 26 supporting the shaft ends of the cores rolling freely on horizontal tracks 31.
  • drive roll 34 is driven at a surface speed somewhat greater than the rate of production of the fabric, similarly as the driven rolls of the take-off 12, whereby continuous slippage of the roll on the fabric occurs.
  • said means for collecting said fabric comprises a core on which said fabric is wound, means in fixed position relatively to said core for rotating said core through frictional contact with an outer winding of fabric thereon, means supporting said core for movement away from said rotating means in a substantially horizontal plane as the diameter of the wound fabric on said core increases, and means for maintaining said rotating means in contact with the fabric on said core with a substantially uniform pressure during said increase in the diameter of the wound fabric, said means for maintaining said rotating means in contact with said fabric comprising lever arms having portions in contact with said core, means pivotally supporting said lever arms at points remote from said portions, means counterbalancing said lever arms whereby in the absence of added biasing means said lever arms will substantially remain in any rotated position, and means biasing said lever arms to swing in a direction to urge said core toward said rotating means.
  • said means biasing said lever arms comprises a projecting lever arm associated with said first mentioned lever arms for angular movement therewith and there is means for biasing said projecting lever arm.
  • said means for biasing said projecting lever arm comprises weight means adjustably mounted on said projecting lever arm.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US783992A 1968-12-16 1968-12-16 Apparatus for forming a roll of fabric continuously with the knitting thereof Expired - Lifetime US3566622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78399268A 1968-12-16 1968-12-16

Publications (1)

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US3566622A true US3566622A (en) 1971-03-02

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US783992A Expired - Lifetime US3566622A (en) 1968-12-16 1968-12-16 Apparatus for forming a roll of fabric continuously with the knitting thereof

Country Status (8)

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US (1) US3566622A (de)
BE (1) BE743164A (de)
BR (1) BR6915157D0 (de)
CH (1) CH496127A (de)
DE (1) DE1950833A1 (de)
ES (1) ES372913A1 (de)
FR (1) FR2026195A1 (de)
GB (1) GB1224957A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985001A (en) * 1974-03-13 1976-10-12 Deering Milliken Research Corporation Take up and doffing apparatus for a circular knitting machine
US4086688A (en) * 1976-03-08 1978-05-02 Dombrowski Edward J Method for imparting coloration to a knit/deknit textile yarn
US4137615A (en) * 1977-06-01 1979-02-06 Burlington Industries, Inc. Process for texturing bicomponent yarn
US6029478A (en) * 1997-07-18 2000-02-29 Mec-Mor S.R.L. Knitting machine with plural knitted fabric tensioning rollers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246369A (en) * 1990-07-24 1992-01-29 Chin Yung Lin Cloth winding device for textile machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985001A (en) * 1974-03-13 1976-10-12 Deering Milliken Research Corporation Take up and doffing apparatus for a circular knitting machine
US4086688A (en) * 1976-03-08 1978-05-02 Dombrowski Edward J Method for imparting coloration to a knit/deknit textile yarn
US4137615A (en) * 1977-06-01 1979-02-06 Burlington Industries, Inc. Process for texturing bicomponent yarn
US6029478A (en) * 1997-07-18 2000-02-29 Mec-Mor S.R.L. Knitting machine with plural knitted fabric tensioning rollers

Also Published As

Publication number Publication date
BR6915157D0 (pt) 1973-01-11
DE1950833A1 (de) 1970-07-23
BE743164A (de) 1970-05-14
FR2026195A1 (de) 1970-09-18
GB1224957A (en) 1971-03-10
ES372913A1 (es) 1971-11-16
CH496127A (de) 1970-09-15

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