US3521466A - Circular knitting machine - Google Patents

Circular knitting machine Download PDF

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Publication number
US3521466A
US3521466A US651729A US3521466DA US3521466A US 3521466 A US3521466 A US 3521466A US 651729 A US651729 A US 651729A US 3521466D A US3521466D A US 3521466DA US 3521466 A US3521466 A US 3521466A
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Prior art keywords
needle
yarn
cam
housing
machine
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US651729A
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English (en)
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Karl H Tannert
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KARL H TANNERT
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KARL H TANNERT
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/34—Devices for cutting knitted fabrics
    • 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
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices
    • D04B15/60—Thread guides for circular knitting machines; Thread-changing devices with thread-clamping or -severing devices
    • D04B15/61—Thread guides for circular knitting machines; Thread-changing devices with thread-clamping or -severing devices arranged within needle circle
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/20—Circular knitting machines with independently-movable needles with provision for narrowing or widening; with reciprocatory action, e.g. for knitting of flat portions

Definitions

  • a circular knitting machine having a machine housing supporting thereon a stationary needle cylinder and dial disk, the needle cylinder and dial disk having needles over only a portion of their respective circumferences.
  • Driveable cam rings rotating in the same direction around the needle cylinder and the dial disk actuate the needles mounted thereon.
  • One of the driveable cam rings carries knitting units thereon, which units consist of a yarn guide and a clamping means.
  • the yarn fed through the yarn guide is cut by stationary cutting means as it enters the needle-free sector, the cut end of the yarn being held by the clamp means as it travels throughout the needle-free sector.
  • the clamp means Upon leaving the needle-free sector, the clamp means is released whereby the yarn is again fed through the needles for knitting thereof.
  • This invention is concerned with a circular knitting machine for the production of sheet goods.
  • Said invention comprises a machine housing which supports a fixed carrying ring which in turn supports a needle cylinder, and a likewise fixed plate which supports a dial disk, said needle cylinder and dial disk being equipped with needles over only a portion of their respective circumferences, and with driveable cam rings rotating around the needle cylinder and the dial disk for actuating the needles and the yarn guides.
  • a machine which is a cross between round and a flat knitting machine wherein two flat knitting machines are joined to each other along their long sides.
  • the needles of these machines are activated by a group of cams which run continuously around a closed track which, within the area of the flat knitting machines, consists of straightways running in opposite directions and of arcs connecting these straightways.
  • Such a machine is not as efiicient as a circular knitting machine of comparable structural complexity because only about one-half of the large circumference of the cam track is constructed as a needle board.
  • the long actuator track cannot be fully equipped with actuations immediately following each other because the structural complexity would be too great.
  • a circular knitting machine wherein two oppositely located sectors of the machine circumference are free of needles.
  • the cylinder ring and the cam ring are each divided into two rings rotating in opposite directions.
  • the yarn guides are movably located on a circular track supported by side supports above the dial disk.
  • Each of the two rings forming the cylinder cam ring carries one arm for the moving of the yarn guides. The latter are moved by the arm of one of the rings in one. direction over one of the needle-equipped sectors and, at the end of this sector, are returned by the arm of the oppositely rotating ring. This means that the yarn guides move back and forth over the appropriate needle-equipped sector.
  • the drive arrangement is very complicated. Both cam rings must be driven separately from outside of the machine housing. A driving of one of the rings by drive means from the other ring is impossible because of the yarn guiding means.
  • the construction of the machine is also complicated by the location of the yarn guides, which is separate from that of the cams, and by the parts regulating the back and forth movement.
  • the efficiency, as in the case of flat knitting machines, is thus limited by parts moving back and forth.
  • the present invention consists of constructing a circular knitting machine of the kind defined above in such a manner that, with the simplest possible machine construction, sheet goods of adjustable width can be produced while maintaining the efficiency of a circular knitting machine.
  • This invention solves this problem by the following combination of features already known in themselves:
  • At least one cutting device for the cutting of the yarns in the area of the needle-free sector.
  • the driving device can be housed in the interior of the machine housing. It is also possible to support the dial disk support plate from below in such a manner that the usually necessary support construction outside the machine can be omitted and the carrying ring and plate can be firmly connected with each other from below. Since parts rotating in only one direction are present, the drive is uncomplicated. A machine drive system including only one gear set is sufficient and this set need not be of high capacity. Further, only one cam ring need be driven since the other cam ring can be driven by means of a simple connecting arrangment from the driven cam ring.
  • FIG. 1 is a central cross-sectional view of a circular knitting machine embodying the invention substantially taken on the line II of FIG. 2. For the purpose of clarity parts not belonging to the invention are omitted.
  • FIG. 2 is a top view of the machine according to FIG. 1 with the spool holder omitted for increased clarity.
  • FIG. 3 is a fragmentary sectional view taken on the line IIIIII of FIG. 1.
  • FIG. 4 is a fragmentary sectional view taken along the line IV-IV of FIG. 1.
  • FIG. 5 is an enlarged fragmentary side view, partially broken away, of the circular knitting machine of FIG. 1.
  • FIG. 6 is a fragmentary sectional view taken on the line VI-VI of FIG. 5.
  • FIG. 7 is a fragmentary sectional view taken on the line VII-VII of FIG. 5.
  • FIG. 8 is a side view of the slide member used in the yarn guide and clamping mechanism.
  • FIG. 8A is a rear view of the slide member illustrated in FIG. 8.
  • FIG. 9 is a fragmentary sectional view taken on the line IXIX of FIG. 5.
  • FIG. 10 is a fragmentary sectional view taken on the line XX of FIG. 5.
  • FIG. 11 is a fragmentary sectional view taken on the line XI-XI of FIG. 5.
  • FIG. 12 is an oblique fragmentary view of the tensioning mechanism taken in the direction of arrow XII of FIG. 13.
  • FIG. 13 is a fragmentary sectional view taken on the line XIII-XIH of FIG. 12.
  • FIG. 14 is a fragmentary sectional view taken on the line XIV-XIV of FIG. 13.
  • the circular knitting machine shown in FIGS. 1-5 as a preferred embodiment of the invention intended for the production of sheet goods comprises a machine housing 1 which essentially has the shape of an upstanding cylinder. Fixed to housing 1 is a carrying ring 2 which carries needle cylinder 3 thereon which in turn supports a plurality of vertical needles 4 within grooves 71 (FIG. 5). A plate 5 is fixed to machine housing 1 and has located thereon a dial disk 6 which supports a plurality of horizontal needles 7. Because of the construction described, neither the dial disk 6 nor the vertical needle cylinder 3 move while the machine is running.
  • both the dial disk 6 and the cylinder 3 there is provided at least one portion of their respective peripheries from which the needles are omitted, whereby to provide at least one sector on both the dial disk and the needle cylinder free of needles.
  • This sector is indicated in FIGS. 2 and 3 wherein there is shown the needle-free sector E-A, the dial disk 6 and the needle cylinder 3 being free of needles in this sector.
  • Cylinder cam ring 8 rotates outside of needle cylinder 3 and a dial cam ring 9 rotates above dial disk 6.
  • cylinder cam ring 8 and dial cam ring 9 rotate in the same direction. Since the needles 4 and 7 are mounted within grooves formed in the stationary cylinder 3 and dial disk 6, respectively, they are actuated so as to reciprocate within these grooves by means of the cam rings 8 and 9, respectively. While many conventional devices are available for this purpose, one convenient means for driving the needles is shown in FIG. 7 wherein the cam rings 8 and 9 are provided with grooved drivers 64 and 65 fixedly connected thereto for rotation therewith. The grooved drivers 64 and 65 are provided with cam grooves 66 and 67, respectively, in the inner periphery thereof.
  • the needles 4 and 7 are each provided with sidewardly projecting lugs 68 and 69, respectively, which engage within the respective cam grooves 66 and 67. Rotation of the cam rings 8 and 9 together with their respective cam grooves 66 and 67 causes the needles 4 and 7 to be reciprocated within their guiding grooves in the desired cyclic manner so as to perform the desired knitting operation. While the cam grooves 66 and 67 have been disclosed as being formed within the grooved drivers, it will be apparent that the cam grooves could be formed directly in the cam rings 8 and 9 so desired.
  • Cam rings 8 and 9 further carry knitting groups or units 10 which essentially consist of clamp means 10a and yarn guides 10b.
  • the preferred embodiment shown is equipped with twelve knitting groups of conventional and well-known construction, which groups will be described in detail hereinafter. Because of the grouping of clamp means 10a and yarn guides 10b in knitting groups 10, the corresponding clamp means and yarn guides rotate together.
  • the machine must also be equipped with a cutting device 36 (FIG. 2) which cuts the yarns in the area of needle-free sector E-A.
  • a cutting device 36 FIG. 2 which cuts the yarns in the area of needle-free sector E-A.
  • a particularly favorable construction of such a cutting device is described hereinafter. For reasons of clarity it is not shown in FIG. 1.
  • the drive for the machine as described can be constructed in a very simple manner. It is sufiicient to drive either dial cam ring 9 or cylinder cam ring 8. These rings are best connected by a driver or coupling element 11 (FIG. 1) whichis simply constructed as an angle arm bridging the zone 12 between the dial and cylinder rings on the outside of said zone.
  • the dial cam ring 9 is fixedly connected to center disk 13 which in turn is fixed to a vertical drive shaft 14 protruding from the machine housing 1.
  • a gear 15 which cooperates with a gear 16.
  • the latter gear is driven from shaft 17 by a drive device 18 (indicated'schematically) mounted within housing 1.
  • Drive device 18 normally consists of an electric motor and a conventional gear drive.
  • gears 15 and 16 are shown as spur gears. However, it would be possible to use bevel gears or the like if a different drive arrangement is desired.
  • the machine drive thus functions in a simple manner as follows:
  • the drive 18 activates vertical drive shaft 14 by way of shaft 17, spur gear 16 and spur gear 15. Its rotation is transmitted to center disk 13 which rotates dial cam ring 9. Ring 9, by means of driver 11, also simultaneously drives cylinder cam ring 8 at the same rotational direction and rate.
  • the plate 5 is advantageously connected to machine housing 1 by a sleeve 21 which depends from plate 5 and is normally fixedly supported on the housing, subject to limited rotation which is usually provided for adjustment purposes only.
  • a bearing bushing 22 encircles the vertical drive shaft 14 and is solidly connected with the upper part of the machine housing 1.
  • the sleeve 21 encircles and is fixed to the bushing 22 and, in this embodiment, rests on a flange projecting from the bushing 22, which flange in turn rests on the upper end of the housing 1.
  • Sleeve 21 also serves as a support for center disk 13. For this purpose it is equipped with a thrust bearing 23 at its upper end.
  • sleeve 21 can be adjusted axially by any convenient means (not shown) adjustment means such as cams, shims, set screws, etc., being well known in the machinery arts.
  • Carrying ring 2 is solidly connected with the machine housing only in the area of needle-free sector EA and is also laterally offset with respect to the machine housing 1 in the manner shown in FIG. 1. More specifically, carrying ring 2 is equipped with a side leg 24 which is connected solidly with the upper part of machine housing 1 at the edge thereof.
  • the vertical central axis of carrying ring 2, which is coaxial with drive shaft 14, is offset or laterally displaced with respect to the assumed vertical central axis of cylindrical machine housing 1 in the direction of the side thereof opposite to the needle-free sector EA.
  • a vertical space or slot 25 (FIGS. 2 and 4) is provided tween the upper edge of machine housing 1 and the lower edge of carrying ring 2.
  • the slot 25 can be formed in any convenient manner.
  • the lower surface 2' of the carrying ring 2 can 'be sloped downwardly relative to the upper surface of the housing 1 so as to meet and join the housing in the region of the side leg 24.
  • the lower surface of the carrying ring 2 would be parallel to the upper surface of the housing 1 but vertically displaced therefrom by means of the side leg 24.
  • Slot 25 thus makes it possible to pull knitting 26 coming out of needle zone 12 downwardly within carrying ring 2 and outside of machine housing 1. Because of this pulling of the knitting 26 outside of'the machine housing 1, the interior of the latter remains free for the housing of the drive assembly and related parts.
  • Slot 25, which on both sides starts from needle-free sector EA, is in practice sufficiently wide that there exists an uncluttered admission to the fontures from below and from within.
  • the pulling of the knitting 26 downwardly is suitably accomplished by means of a plurality of familiar oscillating devices 27.
  • These oscillating devices 27 oscillate in vertical planes located around the needle-equipped circumference of the machine and protrude from the housing 1.
  • Each device 27 is equipped with an activation arm 28 protruding into the housing interior, which arm 28 is energized for periodic up and down movement by means of rotating rollers or cams 29.
  • Rollers or cams 29 are carried by drive ring 30 which is located on the lower end of vertical drive shaft 14. This also results in a considerable simplification of the drive system.
  • Knitting 26 in this operation passes through a guide ring 30a located closely above oscillating devices 27.
  • a receptacle 31 which can be rolled by means of wheels 32. Seen from above (FIG. 2), this receptacle is U-shaped with its inner circumference adapted to the outer circumference of machine housing 1. Receptacle 31 can thus be rolled into a position adjacent the machine housing from the side opposite the needle-free sector EA, and can 'be removed from the housing in the opposite direction. The removal of the finished goods and the placing of a new receptacle adjacent the machine is thus an easy and fast operation.
  • the circular knitting machine offers an excellent opportunity to control activation of the rotating means, primarily the needle actuating cams, and also other rotating parts from one location.
  • the preferred embodiment of the machine has a control head 33 mounted on a base 34 extending from eccentric leg 24 adjacent needle-free sector EA.
  • the control head mechanism is driven by any convenient means (not shown), such as cams or the like from cylinder cam ring 8.
  • Control head 33 contains conventional information storage means 35 for controlling the necessary movements of the machine. If necessary, a pattern storage for Jacquard patterns can also be provided at the same location.
  • the needle actuating cams include a plurality of movable segments (not shown) which are positioned by suitable programming cams.
  • cams have in the past been placed as desired in the path of said segments at various locations around the circumference of the machine.
  • said programming cams are, if desired, combined into the control head and moved as desired according to a preselected program.
  • Such control head can also move and control the cams hereinafter further mentioned by which the yarn guides and cutters are actuated.
  • An advantageous development of the present invention therefore contemplates only a single fixed pair of cutting means 36 (FIG. 2) which sequentially cuts all yarns as they enter the needle-free sector E-A.
  • the clamping device described in detail hereinafter, can be constructed in a known manner and operated either mechanically or pneumatically.
  • FIGS. 5 and 6 show a particularly favorable construction of such a fixed pair of cutters 36 and the manner in which they cooperate with the yarn guide and clamping mechanism.
  • Cutters 36 are located in a needle groove of the needle cylinder (as of the dial disk) at the edge of the needle-free sector at which location yarn guides 10b enter the needle-free sector E-A, arrow U indicating the rotational direction of the guides 10b.
  • the cutters 36 consist of a movable notched bar 37, a stationary cutting bar 38 (FIG.
  • Notched bar 37 is reciprocably movable in a vertical direction by drive means of any convenient type connected with cylinder cam ring 8.
  • One convenient means for driving the notched bar 37 is shown in FIG. 6 wherein the bar 37 is provided at its lower end with a sidewardly projecting lug 62 which engages within a cam groove 63 formed within grooved driver 64.
  • Cam groove 63 is designed so as to linearly reciprocate bar 37 in a vertical direction, the bar 37 being confined between the guide plate 39 and the cutting bar 38 with the reciprocation being imposed due to the lug 62 being confined between the sidewalls of the cam groove 63. Consequently, rotation of the cam ring 8 together with the attached grooved driver 64 causes the cutting bar 37 to be moved downwardly and upwardly in a desired cyclic relationship with the cam ring 8, the cutting bar 37 being moved downwardly shortly after the yarn guide 10! moves into the needle-free sector.
  • Such reciprocating means for cut ting devices are well known in the cutting art as shown by US. Pat. No. 2,810,280.
  • bar 37 is equipped with hook-like head 37a (FIG. 6) underneath which yarn guide 10b introduces yarn 40.
  • a controlled closure device such as, for example, the usual needle latch is coordinated with the hook-like head 37a.
  • Fixed cutting bar 38 has a knife edge 41 at its upper end adjacent notched bar 37. As can be seen from FIGS. 5 and 6, the yarn introduced underneath hook-like head 37a is drawn downward over edge 41 and cut thereby when notched bar 37 is moved downwardly.
  • This movement is controlled by the cam groove 63 in such a manner that each yarn successively introduced by the yarn guides is cut off shortly after entering the needle-free sector, thereby leaving a projecting yarn end of substantial length.
  • it is sufiicient to provide a single pair of cutters for all threads.
  • the devices for connecting cutters 36 to the machine are so constructed that the cutters 36 can be inserted into the grooves 71 of needle cylinder 3 wherever desired.
  • the cutters 36 could also be carried by dial disk 6 if desired.
  • a clamping means is preferably provided at each of the yarn guides 10b and rotates with the dial cam ring 9 in the direction of the arrow U, clamping and holding the yarn 40 as soon as the yarn is cut upon its entrance into the needle-free sector and then releasing said yarn as soon as the yarn guide enters into the needle sector.
  • yarn 40 is guided in the yarn guide 1011 by means of an eyelet 101 and an opening 102. Between these two guides, the yarn passes by a pressure surface 103 formed on the front of the yarn guide 10b.
  • a clamping piece 60 is carried on the end of leaf spring 61, which spring is fastened to the yarn guide 10b at 104 by any convenient means, such as by a screw or by spot welding.
  • Yarn 40 is clamped between the coacting surfaces of the clamping piece 60 and the pressure surface 103 whenever the clamping piece 60 is clamped against the pressure surface 103 by the leaf spring 61 as is illustrated in FIG. 11.
  • the yarn 40 is permitted to run freely through the yarn guide whenever the clamp piece 60 is maintained in a spaced relationship from the pressure surface 103 such as illustrated in FIG. 10.
  • the knitting mechanism 10 has a clamp actuator mounted thereon for controlling the clamping piece 60, which clamp actuator comprises a member 54 slidably mounted within a vertical groove 105 formed in each yarn guide 10b.
  • Each slide 54 (FIG. 8) is provided with an inwardly extended flange 106 on the lowermost end thereof, the upper surface of the flange 106 forming an inclined camming surface 55 and the lower surface forming an inclined camming surface 57 (FIG. 8A).
  • Slide 54 is further provided with a recess 59 intermediate its ends.
  • the slide members 54 are reciprocably moved upward and downward by means of switch cams 107 and 108 affixed on the upper edge of the stationary needle cylinder 3.
  • the switch cam 107 is afilxed 'within a groove 109 to the upper edge of the needle cylinder 3 at the end of the needle-free sector.
  • the cam 107 is provided with a guide surface 56 which tapers downwardly in the direction of rotation of U.
  • the camming surface 57 formed on the slide 54 coacts with the downwardly facing guide edge 56 during the operation of the knitting machine.
  • the other sequence switch cam 108 is also afiixed within the groove 109 to the upper edge of the needle cylinder 3 such as is shown in FIG. 9 and is located near the entrance of the needle-free sector.
  • the cam 108 is also provided with an upwardly facing guide or control edge '58, the edge 58 being tapered upwardly in the direction of rotation U so as to coact with the inclined surface 57 formed on the slide 54.
  • the machine according to the present invention provides tensioning or brake devices, all of which are identical and designated with the number 42 in FIGS. 2 and 5. These tensioning or braking devices are fixed to cylinder 3 and dial disk 6 near the edges of needle-free sector E-A. They are so constructed that they retain the yarn ends protruding from the knitted goods in a yielding manner. For this purpose, they are equipped with cooperating friction surfaces between which the yarn ends can be inserted by means of a movable insert member. The details of such a braking device are shown in FIGS. 12-14.
  • each braking device 42 is equipped with two combs 43 and 44, one of which is fixed to dial disk 6 preferably within groove 110' and the other of which is fixed to needle cylinder 3.
  • the prongs 43a and 44a of each of these combs are partially interleaved between the prongs of the other.
  • Said prongs 43a and 44a have respective slanted head edges 43b and 44b which protrude into zone 12.
  • Insert combs 46 are moved rhythmically up and down in the direction of double arrow B (FIG. 13) by any conventional reciprocating or oscillating drive means, indicated generally at 47. In this operation, the insert comb prongs 46a move in timed relationship with the rest of the machine from the ready position indicated by the broken line 46c in FIG. 13 to the insertion position shown by the solid lines.
  • the drive means 47 for actuating the insert combs 46 may be of any convenient type, one such drive means being illustrated in FIGS. 13 and 14. As illustrated, a plurality of individual insert combs 46 are positioned between the respective prongs 43a of the fixed comb 43, being pivotally connected thereto by means of a pivot pin 45. Each of the insert combs 46 is biased into the open position (clockwise in FIG. 13) by any convenient means as desired, here a torsion spring 111 wrapped around the pin 45, one end of the spring being connected to the insert comb 46 and the other end bearing against the fixed comb 43. In order to move the insert combs 46 into the closed position as indicated in solid lines in FIG.
  • each of the insert combs 46 is in this embodiment formed with a round cam follower portion 112 thereon, which portion is biased into engagement with a ring cam 116 fixedly connected to the dial cam ring 9 and rotatable therewith. As indicated in FIG. 14, the ring cam 116 is provided with ramps 117 thereon for successively actuating the respective combs 46. While the tensioning device has been illustrated as using a plurality of separate combs 46, the insert comb could be formed as a single integral comb member having a plurality of prongs 46a thereon if desired.
  • the yarn 40 is inserted into the angle between prongs 43a and 44a due to the rotational movement of the dial disk 9 and the associated knitting groups 10, the angle between the prongs being substantially circumferentially aligned with the hooked ends of the needles 4 and 7.
  • Insert combs 46 are initially in their ready position indicated by the broken line 46c.
  • Prongs 46a are then successively moved downwardly by drive means 47 and press yarn 40 between prongs 43a and 44a. Since these prongs intermesh yarn 40 in the manner shown in FIG. 12, yarn 40 bends around head edges 43b and 44b of prongs 43a and 44a and acquires a wave-like shape, i.e., zigzags, in the process of being pressed between the prongs. As shown in FIG. 13, several layers of yarn are simultaneously located above each other in tensioning device 42. These wave-like yarns slide downwardly and inwardly along the head edges 43b and 44b into the zone 12. The yarns successively leave tensioning devices 42 as the knitted ware is pulled downwardly by the. devices 27.
  • tensioning device of the kind described above is particularly suitable for the circular knitting machine according to this invention, it can also be used for other knitting machines producing knit goods with open edges.
  • the tensioning device 42 is attached to the dial disk 6 or the needle cylinder 3 in such a fashion that any desired peripheral location can be selected for this purpose.
  • Combs 43 and 44 may each consist of one piece.
  • the combs 43 and 44 are attached to the dial disk and needle cylinder by any convenient means, such as by bolts or the like, not shown.
  • the recess 59 formed within the slide 54 is thus moved downwardly from beneath the clamping piece '60, causing the clamping piece 60 to be cammed or pushed away from the pressure surface 103 in opposition to the leaf spring 61, the yarn 40 thus being released from the clamp and being permitted to freely run through the yarn guide 10b.
  • Tensioning device 42 is actuated almost simultaneously with the release of the clamping mechanism.
  • the ramp 117 of the rotatable cam ring 116 cams follower portions 112 upwardly, which in turn pivots the insert combs 46 in opposition to the torsion springs 111 (counterclockwise in FIG. 13).
  • This successive actuation of the insert combs causes the prongs 46a to contact the yarn end 400 and pull the same downwardly into the spaces between the fixed prongs 43a and 44a, respectively, thus exerting a frictional holding force on the yarn end. Since the free end 400 is held by the tensioning device, continued rotation of the yarn guide 10b causes the yarn to run freely therethrough whereby it is picked up by the needles 4 and 7 (FIG. 7) so that the yarn is knitted throughout the needle-equipped sector.
  • the rotational movement of the knitting mechanism 10 causes the yarn trailing from the guide opening 102 to be positioned beneath the prongs 46a of another tensioning device 42 which is fixedly provided there, which prongs are in the open position. Still further rotational movement of the knitting mechanism 10 causes the trailing yarn to be introduced under the hook-like head 37a of the cutting plate 37. Shortly thereafter, the cam groove 63 causes the cutting plate 37 to be moved downwardly so that the yarn 40 is passed over the cutting edge 41 and cut thereby. Almost simultaneously therewith, the cam ring 116 actuates the tensioning device 42 whereby the insert combs 46 are moved to the closed position so as to grasp and hold the end of the cut yarn segment.
  • the cutting operation also causes a projecting yarn end 400 of substantial length to extend from the knitting unit 10 as can be seen near the left side of FIG. 5.
  • the inclined surface 57 of the slide 54 comes into contact with control edge or surface 58 formed on the cam 108.
  • the slide 54 is thus forceably moved upwardly so as to bring the recess 59 into alignment with the clamping piece 60 whereupon the leaf spring 61 causes the clamping piece to move inwardly into clamping engagement with the pressure surface 103.
  • Yarn 40 is thus again clamped between the clamping piece 60 and the pressure surface 103.
  • any number of knitting systems 10 can be provided on the knitting machine of the present invention, with each of the systems being provided with a yarn guide and a cooperating clamping means.
  • the machine according to this invention can produce sheet goods with the efliciency of a circular knitting machine.
  • the width of the goods can easily be adapted to the demand by adjusting the size of the needle-free sector. For such an adjustment, it is only necessary to insert or remove needles as desired.
  • the devices at the edges of this sector such as cams 107-108, cutters 36, and brake devices 42, can also be adjusted to the new needle-free sector size merely by remounting them in the desired location.
  • the adjustable clamp could be of the slot-and-bolt type, as shown in US. Pat. No. 2,669,104, with driver 11 being connected to cam ring 3 by means of a bolt 72, the driver being pro vided with a circumferentially extending slot 73 so as to permit such angular adjustment.
  • a circular knitting machine for the continuous, unidirectional, production of sheet goods comprising:
  • a needle cylinder partially provided with needles thereon but having a needle-free sector thereon and first means supporting same nonrotatably with respect to said housing;
  • said first means supporting said needle cylinder including a carrying ring and mounting means aflixed to said carrying ring adjacent said needle-free sector for mounting said carrying ring to said housing, said carrying ring being mounted on said housing and being laterally ofiFset and vertically spaced with respect thereto whereby a slot is formed between the upper edge of said housing and the lower edge of said carrying ring for permitting the knitted ware to be pulled inside the carrying ring and outside of said housing; dial disk positioned adjacent the upper end of said needle cylinder and second means supporting the dial disk nonrotatably with respect to said housing, said dial disk partially provided with needles thereon but having a needle-free sector thereon in registry with the needle-free sector of the needle cylinder; needle cylinder cam ring and a dial disk cam ring and means rotatably mounting said cam rings for 12 rotation with respect to said needle cylinder and said dial disk, respectively;
  • yarn feeding means operatively associated with said cam rings for rotational movement around said needle cylinder and said dial disk for feeding yarn to said needles;
  • At least one cutting means for cutting said yarn adjacent said needle-free sector as the yarn feeding means enters the needle-free sector.
  • a circuit knitting machine for the continuous, unidirectional, production of sheet goods comprising:
  • a needle cylinder partially provided with needles thereon but having a needle-free sector thereon and first means supporting same nonrotatably with respect to said housing;
  • dial disk and second means supporting the dial disk nonrotatably with respect to said housing, said dial disk partially provided with needles thereon but having a needle-free sector thereon in registry with the needle-free sector of the needle cylinder;
  • yarn feeding means operatively associated with said cam rings for rotational movement around said needle cylinder and said dial disk for feeding yarns to said needles, said yarn feeding means including a plurality of knitting units fixedly secured to one of said cam rings for rotation therewith, said knitting units being substantially uniformly and circumferentially spaced over an angle which is at least substantially equal to the needled sector of the needle cylinder, and each of said knitting units including a yarn guide; and cutting device for cutting said yarns adjacent said needle-free sector as each knitting unit enters the needle-free sector, said cutting device including a pair of cutters arranged to cut all yarns one after another upon their entrance into said needle-free sector.
  • said pair of cutters is stationarily mounted on one of said needle cylinder and dial disk.
  • a circular knitting machine for the continuous, unidirectional, production of sheet goods comprising:
  • a needle cylinder partially provided with needles thereon but having a needle-free sector thereon and means supporting same nonrotatably with respect to said housing; dial disk and means supporting same nonrotatably with respect to said housing, said dial disk partially provided with needles thereon but having a needlefree sector thereon in registry with the needle-free sector of the needle cylinder; cam rings rotatably arranged for rotation with respect to said needle cylinder and with respect to said dial disk, in one direction only, for progressive actuation of the needles in said needle cylinder and the needles in said dial disk;
  • yarn feeding means operatively associated with-said cam rings for rotational movement around said nee- 13 I dle cylinder and dial disk for feeding yarn to said needles; 1 at least one cutting means for cutting said yarn adjacent said needle-free sector as the yarn feeding means enters the needle-free sector; and tensioning means fixedly attached at one edge of the needle-free sector for yieldable retention of the yarn 'end protruding from the knit piece.
  • said drive means includes a member connecting said cam rings whereby to drive both of said cam rings at equal speeds in response to an external driving source supplied to only one thereof.
  • said housing has a vertical drive shaft mounted Within and protruding therefrom; a drive unit in the interior of the housing; and gear means interconnecting said shaft and said drive unit, one of said cam rings fixedly interconnected with said drive shaft for rotation therewith; the upper end of said drive shaft passing through said dial disk and carrying thereon means rotating there with for supplying yarn to said yarn feeding means.
  • said second means supporting the dial disk comprises a plate positioned below the dial disk, said plate being supported on the housing by means of a sleeve which is fixed with respect to the housing.
  • clamp means for grasping and holding said cut yarn as the yarn-feeding means enters the needle-free sector and releasing the yarn as said yam-feeding means leaves said needle-free sector, whereby said yarn is again fed to said needles.
  • said yarn feeding means includes a yarn guide coordinated with said cutting means and said clamp means whereby said yarn is cut and clamped as said yarn enters the needle-free sector and released again as it leaves the needle-free sector.
  • said tensioning means is provided with cooperating friction surfaces, and successively moving means for inserting the yarn ends between said friction surfaces.
  • a needle cylinder partially provided with needles thereon but having a needle-free sector thereon and first means supporting same nonrotatably with respect to said housing;
  • dial disk positioned adjacent the upper end of said needle cylinder and second means supporting the dial disk nonrotatably with respect to said housing, said dial disk partially provided with needles thereon but having a needle-free sector thereon in registry with the needle-free sector of the needle cylinder;
  • a needle cylinder cam ring and a dial disk cam ring and 14 means rotatably mounting said cam rings for rotation with respect to said needle cylinder and said dial disk, respectively;
  • yarn feeding means operatively associated with said cam rings for rotational movement around said needle cylinder and said dial disk for feeding yarn to said needles;
  • At least one cutting means for cutting said yarn adjacent said needle-free sector as the yarn feeding means enters the needle-free sector.
  • a circular knitting machine for the continuous, unidirectional, production of sheet goods comprising:
  • a needle cylinder partially provided with needles thereon but having a needle-free sector thereon and first means supporting same nonrotatably with respect to said housing;
  • dial disk positioned adjacent the upper end of said needle cylinder and second means supporting the dial disk nonrotatably with respect to said housing, said dial disk partially provided with needles thereon but having a needle-free sector thereon in registry with the needle-free sector of the needle cylinder;
  • Said first support means including a support element positioned below said dial disk and fixedly interconnected between said housing and said needle cylinder for nonrotatably securing same relative to said house;
  • said second support means including a plate stationarily positioned below said dial disk for supporting same, and a support member positioned below said dial disk and supporting said plate on said housing whereby said dial disk is nonrotatably secured relative to said housing;
  • yarn feeding means operatively associated with said cam rings for rotational movement around said needle cylinder and said dial disk for feeding yarn to said needles;
  • At least one cutting means for cutting said yarn adjacent said needle-free sector as the yarn feeding means enters the needle-free sector.
  • the support element of said first support means comprises a cylindrical support ring positioned adjacent to and concentric with the needle cylinder and fixedly secured thereto, said support ring having a lower portion fixedly interconnected to said housing.
  • the support element of said first support means is affixed to said housing adjacent the needle-free sector of said needle cylinder.
  • a needle cylinder cam ring and a dial disk cam ring and 3234761 2/1966 b ⁇ et 66 140 means rotatably mounting said cam rings for rotation 3319489 5/1967 Phlhp XR with respect to said needle cylinder and said dial disk, 3456459 7/1969 Doughty 66-19 XR respectively; FOREIGN PATENTS drive means connected to said cam rings for rotating 533 059 9/1931 Germany same in one direction only for progressive actuation of 712601 10/1941 Germany the needles in said needle cylinder and the needles in 918320 2/1963 Great Briiain 831d dlal (115k; 377,972 7/1964 Switzerland.
  • yarn feeding means operatively associated with said cam rings for rotational movement around said needle WILLIAM CARTER REYNOLDS, 'l EXamlneI cylinder and said dial disk for feeding yarn to said needles; and US. Cl. X.R.
  • At least one cutting means for cutting said yarn ad- 66-28, 125, 142, 146, 153

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US651729A 1963-05-24 1967-07-07 Circular knitting machine Expired - Lifetime US3521466A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET24051A DE1204354B (de) 1963-05-24 1963-05-24 Rundstrickmaschine

Publications (1)

Publication Number Publication Date
US3521466A true US3521466A (en) 1970-07-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US651729A Expired - Lifetime US3521466A (en) 1963-05-24 1967-07-07 Circular knitting machine

Country Status (6)

Country Link
US (1) US3521466A (de)
BE (1) BE667869A (de)
CH (1) CH426076A (de)
DE (1) DE1204354B (de)
FR (1) FR1397649A (de)
GB (1) GB1000387A (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640094A (en) * 1968-05-06 1972-02-08 Mecmor Spa Device for cutting and gripping threads in circular knitting machines and the like
US3791177A (en) * 1971-01-21 1974-02-12 Stibbe Machinery Ltd Circular knitting machines
US3872692A (en) * 1973-08-09 1975-03-25 Toyo Boseki Automatic doffing system for a circular knitting machine
US3890809A (en) * 1973-02-20 1975-06-24 Riccardo Tenconi Circular knitting machine with pneumatic thread feeding devices
US3975926A (en) * 1975-02-24 1976-08-24 Riccardo Tenconi Feed device for circular knitting machines of the type manufacturing open fabric
US4030318A (en) * 1975-10-15 1977-06-21 Morris Philip Dial and cylinder connection
US4068496A (en) * 1975-10-01 1978-01-17 Asa S.A. Device for driving needle beds in a circular knitting machine
US4109491A (en) * 1975-07-14 1978-08-29 Manfred Schmid Thread guidance in mesh-forming machines with rotating thread guides
US4121439A (en) * 1975-06-16 1978-10-24 Wildt, Mellor Bromley Limited Knitting machines
US4261187A (en) * 1978-08-17 1981-04-14 Yang Ping C Oscillation damping and counterpoising circular knitting machine
US4347718A (en) * 1979-10-03 1982-09-07 Hospal Medical Corporation Cutting elements for knitting machines
US4458507A (en) * 1978-08-17 1984-07-10 Yang Ping Chin Oscillation damping and counterpoising circular knitting machine
US4580418A (en) * 1978-08-17 1986-04-08 Yang Ping Chin Oscillation damping and counterpoising circular knitting machine
US4689971A (en) * 1984-08-01 1987-09-01 Paolo Conti Process and circular knitting machine for manufacturing pantyhose articles and the like
US5566558A (en) * 1994-08-08 1996-10-22 Precision Fukuhara Works, Ltd. Fabric slitting and take-up mechanism for a circular knitting machine
US6082143A (en) * 1997-08-14 2000-07-04 Sara Lee Corporation Circular knitting machine
US7310976B1 (en) 2006-10-04 2007-12-25 Monarch Knitting Machinery Corp. Circular knitting-machine chassis with cantilever support
US20090266112A1 (en) * 2008-04-25 2009-10-29 Dietmar Traenkle Circular knitting machine with a rotatably disposed dial
US7836732B1 (en) * 2009-11-06 2010-11-23 Pai Lung Machinery Mill Co., Ltd. Method and apparatus for lowering and folding fabric at amount same as fabric knitted and unloaded by a circular knitting machine
CN103429805A (zh) * 2011-03-18 2013-12-04 桑托尼股份公司 具有筒和带有纱线切割装置的转盘的类型的圆形织袜机的转盘
US20170327981A1 (en) * 2014-12-09 2017-11-16 Lonati S.P.A. Footing for circular knitting machines for hosiery or the like
CN110205745A (zh) * 2019-07-22 2019-09-06 苏州星科自动化科技有限公司 针织横机剪抽纱设备
CN112831905A (zh) * 2020-12-30 2021-05-25 厦门郑萌迈纺织有限公司 一种提花针织机用导向机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009597A (en) * 1975-12-24 1977-03-01 Southern Webbing Mills, Inc. Elastic tape with ravel resistant edge and method of knitting
US4003224A (en) * 1976-04-12 1977-01-18 Stedman Corporation Warp knit elastic fabric having ravel resistant features
DE3021303A1 (de) * 1980-06-06 1981-12-24 Sulzer Morat Gmbh, 7024 Filderstadt Verfahren und rundstrickmaschine zur herstellung eines aus einem grundgestrick und darin eingekaemmten fasern bestehenden gestrickschlauchs
DE4010085C2 (de) * 1990-03-29 1994-07-28 Straehle & Hess Aus textilen Fäden bestehendes Befestigungsband
CN115045033B (zh) * 2022-07-04 2024-01-23 汕头市连兴实业有限公司 一种织领机用线头钩藏处理方法及织领机

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US277603A (en) * 1883-05-15 Circular-knitting machine
US573063A (en) * 1896-12-15 Machine
US928244A (en) * 1906-07-09 1909-07-20 William Worth Burson Knitting-machine.
US1361291A (en) * 1920-12-07 stibbe
US1691887A (en) * 1926-10-22 1928-11-13 Dexdale Hosiery Mills Yarn-cutting means for knitting machines
DE533059C (de) * 1930-05-08 1931-09-08 Terrot Soehne G M B H C Warenabzugsvorrichtung mit einzeln beweglichen Kratzen fuer Rundwirk- und Rundstrickmaschinen
US2079341A (en) * 1935-06-05 1937-05-04 Wachsman Jacob Yarn controlling device for knitting machines
DE712601C (de) * 1939-02-23 1941-10-22 G I Heusel & Co Rundstrickmaschine
US2287131A (en) * 1941-03-05 1942-06-23 Phoenix Hosiery Company Combination cutter and binder for circular knitting machines
US2650487A (en) * 1949-04-07 1953-09-01 Mellor Bromley & Co Ltd Knitting machine
US2696252A (en) * 1948-10-29 1954-12-07 Rosen Karl Isac Joel Machine for spiral-cutting strips from circularly knitted stockinet fabrics
US2705408A (en) * 1952-09-05 1955-04-05 Fahrradwerk Elite Diamant Vvb Flat knitting machine with 2 pairs of needle beds
US2723545A (en) * 1950-12-07 1955-11-15 Stibbe G & Co Ltd Yarn supplying and changing mechanism for knitting machines
US2810280A (en) * 1956-01-25 1957-10-22 Ralph K Rossman Clipping dial for circular knitting machine
US2988905A (en) * 1959-06-25 1961-06-20 Supreme Knitting Machine Co In Oscillating motion circular knitting machine
US3023595A (en) * 1958-05-23 1962-03-06 Wildman Jacquard Co Controller for knitting machines
GB918320A (en) * 1961-03-28 1963-02-13 Alfred Planck Fabric draw-off device for circular knitting and hosiery machines
CH377972A (de) * 1959-12-21 1964-05-31 Dubied & Cie Sa E Fadenwechseleinrichtung für Rundstrickmaschinen
US3234761A (en) * 1961-05-23 1966-02-15 Hudson Strumpffabrik G M B H Clipping mechanism for circular knitting machines
US3319489A (en) * 1962-04-20 1967-05-16 Philip Morris Star wheel and means for setting same
US3456459A (en) * 1966-02-01 1969-07-22 John Carr Doughty Knitting machine

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US2125197A (en) * 1936-04-21 1938-07-26 Scott & Williams Inc Knitting machine and method of operating same
US2235726A (en) * 1939-04-19 1941-03-18 Scott & Williams Inc Circular knitting machine and method of operating same
DE745016C (de) * 1940-02-22 1944-02-23 Friedrich Zeug Rundstrickmaschine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US277603A (en) * 1883-05-15 Circular-knitting machine
US573063A (en) * 1896-12-15 Machine
US1361291A (en) * 1920-12-07 stibbe
US928244A (en) * 1906-07-09 1909-07-20 William Worth Burson Knitting-machine.
US1691887A (en) * 1926-10-22 1928-11-13 Dexdale Hosiery Mills Yarn-cutting means for knitting machines
DE533059C (de) * 1930-05-08 1931-09-08 Terrot Soehne G M B H C Warenabzugsvorrichtung mit einzeln beweglichen Kratzen fuer Rundwirk- und Rundstrickmaschinen
US2079341A (en) * 1935-06-05 1937-05-04 Wachsman Jacob Yarn controlling device for knitting machines
DE712601C (de) * 1939-02-23 1941-10-22 G I Heusel & Co Rundstrickmaschine
US2287131A (en) * 1941-03-05 1942-06-23 Phoenix Hosiery Company Combination cutter and binder for circular knitting machines
US2696252A (en) * 1948-10-29 1954-12-07 Rosen Karl Isac Joel Machine for spiral-cutting strips from circularly knitted stockinet fabrics
US2650487A (en) * 1949-04-07 1953-09-01 Mellor Bromley & Co Ltd Knitting machine
US2723545A (en) * 1950-12-07 1955-11-15 Stibbe G & Co Ltd Yarn supplying and changing mechanism for knitting machines
US2705408A (en) * 1952-09-05 1955-04-05 Fahrradwerk Elite Diamant Vvb Flat knitting machine with 2 pairs of needle beds
US2810280A (en) * 1956-01-25 1957-10-22 Ralph K Rossman Clipping dial for circular knitting machine
US3023595A (en) * 1958-05-23 1962-03-06 Wildman Jacquard Co Controller for knitting machines
US2988905A (en) * 1959-06-25 1961-06-20 Supreme Knitting Machine Co In Oscillating motion circular knitting machine
CH377972A (de) * 1959-12-21 1964-05-31 Dubied & Cie Sa E Fadenwechseleinrichtung für Rundstrickmaschinen
GB918320A (en) * 1961-03-28 1963-02-13 Alfred Planck Fabric draw-off device for circular knitting and hosiery machines
US3234761A (en) * 1961-05-23 1966-02-15 Hudson Strumpffabrik G M B H Clipping mechanism for circular knitting machines
US3319489A (en) * 1962-04-20 1967-05-16 Philip Morris Star wheel and means for setting same
US3456459A (en) * 1966-02-01 1969-07-22 John Carr Doughty Knitting machine

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640094A (en) * 1968-05-06 1972-02-08 Mecmor Spa Device for cutting and gripping threads in circular knitting machines and the like
US3791177A (en) * 1971-01-21 1974-02-12 Stibbe Machinery Ltd Circular knitting machines
US3890809A (en) * 1973-02-20 1975-06-24 Riccardo Tenconi Circular knitting machine with pneumatic thread feeding devices
US3872692A (en) * 1973-08-09 1975-03-25 Toyo Boseki Automatic doffing system for a circular knitting machine
US3975926A (en) * 1975-02-24 1976-08-24 Riccardo Tenconi Feed device for circular knitting machines of the type manufacturing open fabric
US4121439A (en) * 1975-06-16 1978-10-24 Wildt, Mellor Bromley Limited Knitting machines
US4109491A (en) * 1975-07-14 1978-08-29 Manfred Schmid Thread guidance in mesh-forming machines with rotating thread guides
US4287728A (en) * 1975-07-16 1981-09-08 Sulzer Morat Gmbh Thread guidance in mesh-forming machines with rotating thread guides
US4068496A (en) * 1975-10-01 1978-01-17 Asa S.A. Device for driving needle beds in a circular knitting machine
US4030318A (en) * 1975-10-15 1977-06-21 Morris Philip Dial and cylinder connection
US4261187A (en) * 1978-08-17 1981-04-14 Yang Ping C Oscillation damping and counterpoising circular knitting machine
US4458507A (en) * 1978-08-17 1984-07-10 Yang Ping Chin Oscillation damping and counterpoising circular knitting machine
US4580418A (en) * 1978-08-17 1986-04-08 Yang Ping Chin Oscillation damping and counterpoising circular knitting machine
US4347718A (en) * 1979-10-03 1982-09-07 Hospal Medical Corporation Cutting elements for knitting machines
US4689971A (en) * 1984-08-01 1987-09-01 Paolo Conti Process and circular knitting machine for manufacturing pantyhose articles and the like
US5566558A (en) * 1994-08-08 1996-10-22 Precision Fukuhara Works, Ltd. Fabric slitting and take-up mechanism for a circular knitting machine
US6082143A (en) * 1997-08-14 2000-07-04 Sara Lee Corporation Circular knitting machine
US7310976B1 (en) 2006-10-04 2007-12-25 Monarch Knitting Machinery Corp. Circular knitting-machine chassis with cantilever support
US20090266112A1 (en) * 2008-04-25 2009-10-29 Dietmar Traenkle Circular knitting machine with a rotatably disposed dial
US7836732B1 (en) * 2009-11-06 2010-11-23 Pai Lung Machinery Mill Co., Ltd. Method and apparatus for lowering and folding fabric at amount same as fabric knitted and unloaded by a circular knitting machine
US20140007625A1 (en) * 2011-03-18 2014-01-09 Santoni S.P.A. Dial of circular hosiery knitting machine of the type with cylinder and dial with yarn cutting device
CN103429805A (zh) * 2011-03-18 2013-12-04 桑托尼股份公司 具有筒和带有纱线切割装置的转盘的类型的圆形织袜机的转盘
US8769996B2 (en) * 2011-03-18 2014-07-08 Santoni S.P.A. Dial of circular hosiery knitting machine of the type with cylinder and dial with yarn cutting device
CN103429805B (zh) * 2011-03-18 2015-11-25 桑托尼股份公司 具有筒和带有纱线切割装置的转盘的类型的圆形织袜机的转盘
US20170327981A1 (en) * 2014-12-09 2017-11-16 Lonati S.P.A. Footing for circular knitting machines for hosiery or the like
US10351981B2 (en) * 2014-12-09 2019-07-16 Lonati S.P.A. Footing for circular knitting machines for hosiery or the like
CN110205745A (zh) * 2019-07-22 2019-09-06 苏州星科自动化科技有限公司 针织横机剪抽纱设备
CN110205745B (zh) * 2019-07-22 2024-02-02 苏州星科自动化科技有限公司 针织横机剪抽纱设备
CN112831905A (zh) * 2020-12-30 2021-05-25 厦门郑萌迈纺织有限公司 一种提花针织机用导向机构

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Publication number Publication date
DE1204354B (de) 1965-11-04
CH426076A (de) 1966-12-15
FR1397649A (fr) 1965-04-30
BE667869A (fr) 1965-12-01
GB1000387A (en) 1965-08-04

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