WO1981002901A1 - Ameliorations relatives a des metiers a tricoter - Google Patents

Ameliorations relatives a des metiers a tricoter Download PDF

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Publication number
WO1981002901A1
WO1981002901A1 PCT/AU1981/000039 AU8100039W WO8102901A1 WO 1981002901 A1 WO1981002901 A1 WO 1981002901A1 AU 8100039 W AU8100039 W AU 8100039W WO 8102901 A1 WO8102901 A1 WO 8102901A1
Authority
WO
WIPO (PCT)
Prior art keywords
yarn
feed
guide means
cam
knitting
Prior art date
Application number
PCT/AU1981/000039
Other languages
English (en)
Inventor
E Fox
Original Assignee
Dunlop Olympic Ltd
E Fox
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dunlop Olympic Ltd, E Fox filed Critical Dunlop Olympic Ltd
Priority to AU69236/81A priority Critical patent/AU6923681A/en
Priority to DE19813142251 priority patent/DE3142251A1/de
Priority to AU75898/81A priority patent/AU541580B2/en
Publication of WO1981002901A1 publication Critical patent/WO1981002901A1/fr

Links

Classifications

    • 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
    • D04B15/50—Thread-feeding devices for elastic threads

Definitions

  • This invention relates to circular knitting machines and concerns particularly a device applicable to machines with relatively small diameter cylinders (generally less than 12.7 cm or 5 inches) and fitted with quality control drums (also known as main control drums). It is common practice with such knitting machines to effect the introduction into and withdrawal of yarns from the knitting needles using "move" studs located at selected intervals of a continuous driven chain. Through levers the "move” studs actuate cams on the quality control drum, and further levers in contact with the cams direct stitch fingers each containing yarn, into or out from the knitting needles.
  • the stitch size and hence the length of yarn in each knitted course can be kept constant or varied according to a predetermined plan.
  • yarns which are knitted into fabric other yarns may be inserted into or through knitted loops and such yarns are described as being “laid” into the fabric.
  • One type of yarn commonly “laid” into knitted fabric is termed elastic yarn or elastic thread, consisting usually of one or more continuous filaments of Spandex or of latex rubber being, in order the exercise control over it, covered by wrapping it within one or more layers of a fine staple yarn such as cotton or a fine synthetic filament, yarn, such as continuous filament nylon.
  • a fine staple yarn such as cotton or a fine synthetic filament, yarn, such as continuous filament nylon.
  • knitted course is effected by means of a yarn "furnisher” located and operating quite apart from the quality control drum.
  • These yarn “furnishers” may be for example, the “disc” type for which the length of yarn laid into each knitted course of fabric depends on the radial distance of the yarn track from the centre of the disc.
  • Such yarn furnishers are adjustable to supply a fixed selected length of yarn for each course of knitted fabric.
  • it is customary to stop the knitting operation and make appropriate adjustments to the furnisher before recommencing Che knitting operator.
  • variable speed electric motor in which the motor speed, and therefore the yarn speed and length of yarn per knitted course, are controlled by a cam of selected profile coupled with the main drive of the knitting machine through a gear train.
  • This invention concerns a simpler and less expensive mechanical arrangement that may be used to control the feeding of "laid in” yarn on conventional knitting machines.
  • a knitting machine having a disc or cone type yarn furnisher to regulate the feed of a "laid in” yarn, yarn guide means co-operating with the surface of the yarn furnisher to hold the yarn in feeding relationship therewith, said guide means being movable relative to said surface to control the position of said guide means on said surface to vary the rate of yarn feed, a cam track on the quality control drum of the knitting machine having a profile determined in accordance with the required yarn feed rates, and means operable by the cam track to control said movement of the yarn guide means.
  • the "laid in" yarn feed speed may be changed and therefore the length of yarn laid into each knitted course of fabric may be varied either from one fixed value in one part of the fabric to another value in a succeeding part of the same fabric, or continuously in any part of the fabric.
  • a yarn feed control for a knitting machine comprising a feed member having a surface of revolution and mounted for rotation on the axis of said surface, means to rotate said feed member about said axis at a predetermined speed, yarn guide means arranged to hold the yarn in frictional drive contact with said surface so feed movement is imparted to the yarn by the rotation of the feed member and the rate of feed is proportional to the radius of the location of the contact between the yarn and said surface from the axis of the surface, said guide means being movable relative to the surface of revolution to adjust the location of the contact between the surface and the yarn, and means to control the movement of the guide means in a predetermined extent and sequence during a knitting cycle.
  • the yarn package 17 supplies the thread 16 to the knitting machine via the guide 18 thread tensioning devices 19, and thread feed control 25.
  • the feed control comprises a disc 22 supported by the spindle 22a for rotation in a horizontal plane relative to the frame of the machine indicated generally at 26.
  • the shaft 22a is driven from one of the various power sources on the knitting machine so as to rotate at a steady speed in a clockwise direction as viewed in Figure 1 of the drawings.
  • the upper face of the disc 22 is flat and has a surface finish which will establish suitable friction contact with the thread 16 to feed the thread forward without slippage between the thread 16 and the disc 22.
  • the bracket 14 is pivotally mounted by the pin 15 to the machine frame 26 so that the bracket 14 may have a limited oscillating pivotal movement relative to the frame 26 about the pin 15.
  • the axis of the pin 15 is parallel to the axis of the shaft 22a.
  • Carried by the bracket 14 is an arm 23 which projects over the disc 22 and carries adjacent its free end, a wheel 21.
  • the wheel 21 is supported on the arm 23 for rotation about. a horizontal axis located in a plane at right angles to the axis of the shaft 22a.
  • the arm 23 is pivotally connected to the bracket 14 by the shaft 27 for movement about an axis parallel to the axis of the wheel 21.
  • the torsional spring 24 is connected between the arm 23 and the adjustment knob 24a mounted on the shaft 27 secured to the bracket 14. The spring 24 urges the wheel 21 towards the disc 22 to hold the yarn 16 in frictional drive contact with the disc 22.
  • the other end of the shaft 27 has a reduced diameter pin portion 28 which is received in the forked arm 12a of the bell crank member 12.
  • the other arm of the bell crank member 12 is connected to the operating rod 11.
  • the spring 13 is connected between the forked arm 12a of the bell crank and a fixed part of the frame 26 to urge the bracket 14 to pivot in a direction that moves the arm 23 in a direction to bring the wheel 21 towards the centre of the disc 22.
  • the adjustment screw 14a is threadably engaged in the lug 26a attached to the machine frame, and may be set to establish the basic position of the wheel 21 relative to the centre of the disc 22. The screw 14a thus sets the basic minimum feed rate of the yarn.
  • the rocker arm 10 is journalled through the bearings 6 on the shaft 7 which is fixedly supported by the frame of the knitting machine not shown.
  • One end of the rocker arm is pivotally connected at 11a to the push rod 11, the rocker arm 10 has two portions 8 and 8a carrying respective cam followers 9 and 9a.
  • the cam followers 9 and 9a are threadable engaged in apertures in the portions 8 and 8a so that they may be adjusted relative to the cams 3 and 3a respectively.
  • the portions 8 and 8a are interconnected by the bar 4 which is also connected to the portion 5 so that they all operate as a integral rigid arm.
  • the cams 3 and 3a are mounted on respective drums
  • the cam 3a may be used to make a change in the rate of feed between two portions of the fabric each portion comprising a number of courses.
  • the cam 3 may be used to effect an adjustment in the yarn feed rate between successive courses of the fabric over a large number of courses.
  • the cam 3a may be used to effect the change in feed rates between two portions of the fabrics, each comprising a number of courses, and in addition the cam 3 may effect a change in the feed rate between each successive course in one of those portions of the fabric.
  • the pivotally mounted bracket 14 may be modified for linear sliding movement on the frame 26 to effect the adjustment of the position of contact of the yarn 16 with the disc 22.
  • the sliding movement of the bracket 14 can be effected by the crank member 12 if the crank member is mounted to operate in a plane at right angles to that shown in the drawings,
  • the leverage ratio of the device is 3.94.
  • Leverage ratio of the device is 4.08 to 1.
  • Two rotations of the driven disc equals one knitted course of fabric and the elastic yarn is extended to 607. of its relaxed length at the point of contact with the driven disc. A single ratchet move will cause the point of contact with the driven disc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

Dispositif comprenant un dispositif d'alimentation pour le tramage de fil dans un tissu pendant le tricotage et des cames ayant un profil selectionne montees sur le tambour de controle de qualite du metier a tricoter, et un systeme de leviers servant a transmettre le mouvement des cames a un ou plusieurs becs fils pour faire varier l'emplacement du chemin de fil a la surface du disque ou du cone du dispositif d'alimentation et pour ajuster la vitesse a laquelle le fil est trame dans le tissu.
PCT/AU1981/000039 1980-04-03 1981-04-02 Ameliorations relatives a des metiers a tricoter WO1981002901A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU69236/81A AU6923681A (en) 1980-04-03 1981-04-02 Improvements relating to knitting machines
DE19813142251 DE3142251A1 (de) 1980-04-03 1981-04-02 Improvements relating to knitting machines
AU75898/81A AU541580B2 (en) 1981-04-02 1981-04-15 A method of growing plants, and a growing bag for use by the method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPE303880 1980-04-03
AU3038/80 1980-04-03

Publications (1)

Publication Number Publication Date
WO1981002901A1 true WO1981002901A1 (fr) 1981-10-15

Family

ID=3768481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1981/000039 WO1981002901A1 (fr) 1980-04-03 1981-04-02 Ameliorations relatives a des metiers a tricoter

Country Status (5)

Country Link
EP (1) EP0049249A4 (fr)
JP (1) JPS57500435A (fr)
CA (1) CA1158451A (fr)
IT (1) IT1138262B (fr)
WO (1) WO1981002901A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194968B (en) * 1986-09-10 1990-07-25 Profile For Sport Limited Improvements in or relating to knitting machines
EP0452489A1 (fr) * 1988-06-02 1991-10-23 Nagata Seiki Kabushiki Kaisha Organe d'alimentation en fil elastique
US6079656A (en) * 1995-10-06 2000-06-27 Memminger-Iro Gmbh Thread feed device for elastic yarn

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB456540A (fr) *
GB324785A (en) * 1929-01-04 1930-02-06 Horace Richard Hulme Improvements in or relating to knitting machines
GB430637A (en) * 1934-10-17 1935-06-21 Scott & Williams Inc Improvements relating to knitting machines
FR824843A (fr) * 1938-09-23 1938-02-17 Procédé et dispositif pour la fabrication de tricots élastiques proportionnés
GB484711A (en) * 1935-11-20 1938-05-10 Lebocey Soc Ets Improvements in yarn feeding means for knitting machines
US2182295A (en) * 1935-11-20 1939-12-05 Lebocey Gaston Automatic variable output feeder for shaped knitted articles
US2273052A (en) * 1940-09-20 1942-02-17 Scott & Williams Inc Strand feeding mechanism
US2300808A (en) * 1942-11-03 Device for use in knitting
US2333705A (en) * 1942-08-01 1943-11-09 Scott & Williams Inc Strand feeding mechanism
US2667266A (en) * 1949-10-29 1954-01-26 Bentley Eng Co Ltd Yarn furnishing device
GB861880A (en) * 1956-05-07 1961-03-01 Hosiery And Allied Trades Res Improvements in and relating to circular knitting machines
GB861879A (en) * 1956-05-07 1961-03-01 Hosiery And Allied Trades Res Improvements in and relating to circular knitting machines
FR2087009A5 (en) * 1970-04-16 1971-12-31 Textil Financ Auxiliaire Elasticated yarn - with lubricating agent removed by dipping
CH523362A (de) * 1970-07-29 1972-05-31 Iws Nominee Co Ltd Vorrichtung zur Garnzuführung für Textilmaschinen
US3862711A (en) * 1970-07-29 1975-01-28 Iws Nominee Co Ltd Yarn feeding device for textile machines such as knitting machines and the like

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB456540A (fr) *
US2300808A (en) * 1942-11-03 Device for use in knitting
GB324785A (en) * 1929-01-04 1930-02-06 Horace Richard Hulme Improvements in or relating to knitting machines
GB430637A (en) * 1934-10-17 1935-06-21 Scott & Williams Inc Improvements relating to knitting machines
GB484711A (en) * 1935-11-20 1938-05-10 Lebocey Soc Ets Improvements in yarn feeding means for knitting machines
US2182295A (en) * 1935-11-20 1939-12-05 Lebocey Gaston Automatic variable output feeder for shaped knitted articles
FR824843A (fr) * 1938-09-23 1938-02-17 Procédé et dispositif pour la fabrication de tricots élastiques proportionnés
US2273052A (en) * 1940-09-20 1942-02-17 Scott & Williams Inc Strand feeding mechanism
US2333705A (en) * 1942-08-01 1943-11-09 Scott & Williams Inc Strand feeding mechanism
US2667266A (en) * 1949-10-29 1954-01-26 Bentley Eng Co Ltd Yarn furnishing device
GB861880A (en) * 1956-05-07 1961-03-01 Hosiery And Allied Trades Res Improvements in and relating to circular knitting machines
GB861879A (en) * 1956-05-07 1961-03-01 Hosiery And Allied Trades Res Improvements in and relating to circular knitting machines
FR2087009A5 (en) * 1970-04-16 1971-12-31 Textil Financ Auxiliaire Elasticated yarn - with lubricating agent removed by dipping
CH523362A (de) * 1970-07-29 1972-05-31 Iws Nominee Co Ltd Vorrichtung zur Garnzuführung für Textilmaschinen
GB1299466A (en) * 1970-07-29 1972-12-13 Iws Nominee Co Ltd Yarn feed device
US3862711A (en) * 1970-07-29 1975-01-28 Iws Nominee Co Ltd Yarn feeding device for textile machines such as knitting machines and the like
AU461879B2 (en) * 1970-07-29 1975-06-12 I. W. S. Nominee Company Limited Knitting machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194968B (en) * 1986-09-10 1990-07-25 Profile For Sport Limited Improvements in or relating to knitting machines
EP0452489A1 (fr) * 1988-06-02 1991-10-23 Nagata Seiki Kabushiki Kaisha Organe d'alimentation en fil elastique
EP0452489A4 (en) * 1988-06-02 1991-11-13 Nagata Seiki Kabushiki Kaisha Elastic yarn feeder
US6079656A (en) * 1995-10-06 2000-06-27 Memminger-Iro Gmbh Thread feed device for elastic yarn

Also Published As

Publication number Publication date
EP0049249A1 (fr) 1982-04-14
EP0049249A4 (fr) 1982-08-05
IT8120934A0 (it) 1981-04-03
JPS57500435A (fr) 1982-03-11
IT1138262B (it) 1986-09-17
CA1158451A (fr) 1983-12-13

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