GB2193230A - Density control device in a circular knitting machine - Google Patents

Density control device in a circular knitting machine Download PDF

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Publication number
GB2193230A
GB2193230A GB08717947A GB8717947A GB2193230A GB 2193230 A GB2193230 A GB 2193230A GB 08717947 A GB08717947 A GB 08717947A GB 8717947 A GB8717947 A GB 8717947A GB 2193230 A GB2193230 A GB 2193230A
Authority
GB
United Kingdom
Prior art keywords
circular knitting
machine
control device
density control
knitting machine
Prior art date
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.)
Withdrawn
Application number
GB08717947A
Other versions
GB8717947D0 (en
Inventor
Pavel Uhlir
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.)
Elitex Zavody Textilniho
Elitex koncern textilniho strojirenstvi
Original Assignee
Elitex Zavody Textilniho
Elitex koncern textilniho strojirenstvi
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
Priority to CS865686A priority Critical patent/CS255035B1/en
Application filed by Elitex Zavody Textilniho, Elitex koncern textilniho strojirenstvi filed Critical Elitex Zavody Textilniho
Publication of GB8717947D0 publication Critical patent/GB8717947D0/en
Publication of GB2193230A publication Critical patent/GB2193230A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B9/00Circular knitting machines with independently-movable needles
    • D04B9/02Circular knitting machines with independently-movable needles with one set of needles
    • D04B9/025Circular knitting machines with independently-movable needles with one set of needles with stitch-length regulation

Description

GB2193230A 1 SPECIFICATION ences the adjustment of the density contol cam

automatically during knitting.

Density control device in a circular knitting The device according to the invention will machine now be described, by way of example, with reference to the accompanying drawing.

The invention relates to a density control de- A known single-cylinder circular knitting ma vice in a circular knitting machine for the prochine for the production of hosiery and the duction of hosiery and the like goods. like goods is provided with a needle cylinder It is known that in hosiery multi-feed, circu- 1 in the longitudinal tricks 2 of which there lar knitting machines on the fabric there ori- 75 are located knitting needles 3 and under the ginate undesirable transverse stripes, originat- needles there are, not shown, jacks. Known ing due to irregular consumption of the knock-over sinkers 4 cooperate with the knitt threads in individual knitting feeds and pre- ing needles 3. To create stitches the knitting senting themselves as regularly alternating needles 3 are controlled by stitch cams 5 with courses with different length of the stitches. 80 respective counter cams 6 arranged in indivi Stitch length and thus the speed of the thread dual knitting feeds. Each stitch cam 5 or take-off in respective knitting feed is given by counter cam 6 is fixedly located on a carrier the depth of sinking the needle hooks under 7. Carrier 7 is placed on pins of rocker levers the knock over level and it is also influenced 8,9 which are by their pins located swingably by the tension of the taken-off thread from 85 in a stand 10. The stand 10 is fixedly ar which the stitches are formed. Sinking of the ranged on a flange 11 of the machine. Further needles is given by the density control cams in the stand 10 there is fixedly arranged an and the thread tension is influenced by the electric motor 12 either as a step motor or a adjustment of the thread brakes and by the servomotor and the like. On the shaft of the quality of thread winding on the bobbin. Be- 90 electric motor 12 is mounted a lever 13 which cause even insignificant changes in the depth is kinematically connected with the prolonged of needle sinking or in the tension of the end of the rocker lever 9 by means of a tie taken-off thread significantly influence the rod 14.

stitch length, it is necessary to check the fab- Circular knitting machine is provided with a ric quality sometimes even several times durcontrol microcomputer 15 to which is con ing one work shift and to adjust the density nected the electric motor 12 via a lead A.

control cams, eventually thread braking. Ad- Further to the input of a control microcompu justment of the density control cams espe- ter 15 is connected a sensor 16 via a lead B, cially in multi-feed knitting machines is difficult the sensor measuring the speed of the thread and time consuming. It is performed so that 100 P being supplied by a guide 17 from a bobbin the length of the stitches is checked, or by 18 on the machine bobbin- stand. The memory means of a special hand carried apparatus by of the control microcomputer 15 contains means of which the speed of the yarn take-off coded speeds of the thread P supplied for in individual feeds is measured. Then in de- individual sections of knitting and further, with pendence of measured values adjustment of 105 regard to said speeds, also axial positions of the density control cams is performed manu- each stitch cam 5 are coded, that is by angu ally by means of the adjustment screws. Due lar position of the shaft of the electric motor to the difficulties with laborious adjustment of 12.

the densities in multi-feed knitting machines During knitting, thread P is drawn towards there is a large portion of the fabrics with 110 the sensor 16 which measures its speed of transverse stripes. take-off and transfers it in coded form to the The object of the invention is to eliminate control microcomputer 15. Said information on the above mentioned disadvantages. measured speed is compared here with the According to the invention there is provided information coded in the memory and in case a density control device in a circular knitting 115 of a difference in information the control mi machine for the production of hosiery and the crocomputer 15 sends respective signal into like goods, compris ing a stitch cam controlled the electric motor 12, which then by means axially movably by a kinematic transmission by of kinematic transmission performs respective means of an electric motor by a control mi- correction of axial position of the stitch cam 5 crocomputer of the machine, wherein it com120 and thus also a correction in the fabric den prises a sensor to measure the speed of sity.

thread supplied to the needles connected. to The above mentioned operation is described the control microcomputer of the machine. only for thread P supplied into one knitting The advantage of the invention is the fact feed. The density is controlled in the same that the values of the speed fed by the scan- 125 way and by the same means also in other ner into the control computer are during knitt- knitting feeds. Sensor 16 is either permanently ing compared with the speed entered for re- arranged in the outfit of the machine, or it can spective zone of knitting into the programme be used only when checking, when the opera and on the ground of said comparison pulses tor connects the sensor to the control micro are sent into the electric motor which influ- 130 computer and performs manual measurement 2 GB2193230A 2 of the speed.

Claims (2)

1. A density control device in a circular knitting machine for the production of hosiery and the like gooods, comprising a stitch cam controlled axially movably by a kinematic transmission by means of an electric motor by a control microcomputer of the machine, wherein it comprises a sensor to measure the S I peed of thread supplied to the needles con nected to the control microcomputer of the machine.
2. A density control device in a circular knitting machine, substantially as hereinbefore described with reference to the accompanying drawings.
Published 1988 at The Patent office, state House, 66/71 High Holborn, London WC 1 R 4TP. Further copies may be obtained from The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD. Printed by Burgess & Son (Abingdon) Ltd. Con. 1/87.
GB08717947A 1986-07-29 1987-07-29 Density control device in a circular knitting machine Withdrawn GB2193230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS865686A CS255035B1 (en) 1986-07-29 1986-07-29 Density control device for circular knitting frame

Publications (2)

Publication Number Publication Date
GB8717947D0 GB8717947D0 (en) 1987-09-03
GB2193230A true GB2193230A (en) 1988-02-03

Family

ID=5402185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08717947A Withdrawn GB2193230A (en) 1986-07-29 1987-07-29 Density control device in a circular knitting machine

Country Status (4)

Country Link
CS (1) CS255035B1 (en)
DE (1) DE3724823A1 (en)
GB (1) GB2193230A (en)
IT (1) IT1222160B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382282A1 (en) * 1989-02-10 1990-08-16 MATEC S.r.l. Improved method for producing quality hosiery in circular knitting machines and a device for its implementation
EP0423888A1 (en) * 1989-10-19 1991-04-24 MATEC S.r.l. Method for determining the size of the stitch loops in stocking production machines
EP0485005A1 (en) * 1990-11-07 1992-05-13 MATEC S.r.l. Method for determining the size of the stitch loops in sock-production machines
EP0652314A1 (en) * 1993-11-04 1995-05-10 Precision Fukuhara Works, Ltd Method and apparatus for adjusting the stitch length on a circular knitting machine
EP1098020A2 (en) * 1999-11-03 2001-05-09 Sangiacomo S.p.A. System for varying the stitches through programmed movements of the stitch cams in circular knitting machines
US6301938B1 (en) * 1999-09-24 2001-10-16 Precision Fukuhara Works, Ltd. Automatic fabric density adjusting device and yarn feeding control mechanism for a circular knitting machine
ITMI20111030A1 (en) * 2011-06-08 2012-12-09 Santoni & C Spa Procedure to adjust the size of textile production of textile machinery circular hosiery knitting
KR101520525B1 (en) * 2011-06-08 2015-05-14 산토니 에쎄.뻬.아. A process for regulating a size of knitted articles under production in circular knitting machines for knitwear or hosiery

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB861880A (en) * 1956-05-07 1961-03-01 Hosiery And Allied Trades Res Improvements in and relating to circular knitting machines
GB1089194A (en) * 1964-07-22 1967-11-01 Morat Gmbh Franz Improvements in or relating to thread feed speed detecting devices for thread working machines
GB1219666A (en) * 1968-07-02 1971-01-20 Nat Res Dev Improvements in or relating to measuring
GB1227591A (en) * 1967-03-17 1971-04-07
GB2134549A (en) * 1982-12-11 1984-08-15 Shima Idea Center Co Ltd Method of and device for adjusting knitting density

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB861880A (en) * 1956-05-07 1961-03-01 Hosiery And Allied Trades Res Improvements in and relating to circular knitting machines
GB1089194A (en) * 1964-07-22 1967-11-01 Morat Gmbh Franz Improvements in or relating to thread feed speed detecting devices for thread working machines
GB1227591A (en) * 1967-03-17 1971-04-07
GB1219666A (en) * 1968-07-02 1971-01-20 Nat Res Dev Improvements in or relating to measuring
GB2134549A (en) * 1982-12-11 1984-08-15 Shima Idea Center Co Ltd Method of and device for adjusting knitting density

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382282A1 (en) * 1989-02-10 1990-08-16 MATEC S.r.l. Improved method for producing quality hosiery in circular knitting machines and a device for its implementation
US5016449A (en) * 1989-02-10 1991-05-21 Savio, S.P.A. Method of producing quality hosiery by changing stitch length in circular knitting machines and a device for its implementation
EP0423888A1 (en) * 1989-10-19 1991-04-24 MATEC S.r.l. Method for determining the size of the stitch loops in stocking production machines
US5174132A (en) * 1989-10-19 1992-12-29 Savio S.P.A. Determining the size of the stitch loops in stocking production machines
EP0485005A1 (en) * 1990-11-07 1992-05-13 MATEC S.r.l. Method for determining the size of the stitch loops in sock-production machines
US5442564A (en) * 1990-11-07 1995-08-15 Savio S.P.A. Method for determining the size of the stitch loops in sock-production machines
EP0652314A1 (en) * 1993-11-04 1995-05-10 Precision Fukuhara Works, Ltd Method and apparatus for adjusting the stitch length on a circular knitting machine
US5511392A (en) * 1993-11-04 1996-04-30 Precision Fukuhara Works, Ltd. Method and apparatus for adjusting the stitch length on a circular knitting machine
US6301938B1 (en) * 1999-09-24 2001-10-16 Precision Fukuhara Works, Ltd. Automatic fabric density adjusting device and yarn feeding control mechanism for a circular knitting machine
EP1098020A2 (en) * 1999-11-03 2001-05-09 Sangiacomo S.p.A. System for varying the stitches through programmed movements of the stitch cams in circular knitting machines
EP1098020A3 (en) * 1999-11-03 2002-04-17 Sangiacomo S.p.A. System for varying the stitches through programmed movements of the stitch cams in circular knitting machines
ITMI20111030A1 (en) * 2011-06-08 2012-12-09 Santoni & C Spa Procedure to adjust the size of textile production of textile machinery circular hosiery knitting
CN102817167A (en) * 2011-06-08 2012-12-12 山德霓股份公司 Process for of adjusting size of knitted articles under production in circular knitting machines for knitwear or hoisery
EP2532776A1 (en) * 2011-06-08 2012-12-12 SANTONI S.p.A. A process for of adjusting the size of knitted articles under production in circular knitting machines for knitwear or hoisery
KR101520525B1 (en) * 2011-06-08 2015-05-14 산토니 에쎄.뻬.아. A process for regulating a size of knitted articles under production in circular knitting machines for knitwear or hosiery
TWI498465B (en) * 2011-06-08 2015-09-01 Santoni & C Spa A process for regulating a size of knitted articles under production in circular knitting machines for knitwear or hosiery
CN102817167B (en) * 2011-06-08 2015-09-16 山德霓股份公司 On knitting clothes or hosiery circular loom in producing the method for metering needle fabric size
EP2985372A1 (en) * 2011-06-08 2016-02-17 SANTONI S.p.A. A process for regulating the size of knitted articles under production in circular knitting machines for knitwear or hosiery

Also Published As

Publication number Publication date
CS255035B1 (en) 1988-02-15
IT8721481D0 (en) 1987-07-28
CS568686A1 (en) 1987-06-11
IT1222160B (en) 1990-09-05
DE3724823A1 (en) 1988-02-11
GB8717947D0 (en) 1987-09-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)