EP0095445A1 - Zylinder mit umlaufender Büchse zum Verhindern von Verdrehungen an Rundstrickmaschinen - Google Patents

Zylinder mit umlaufender Büchse zum Verhindern von Verdrehungen an Rundstrickmaschinen Download PDF

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Publication number
EP0095445A1
EP0095445A1 EP83830090A EP83830090A EP0095445A1 EP 0095445 A1 EP0095445 A1 EP 0095445A1 EP 83830090 A EP83830090 A EP 83830090A EP 83830090 A EP83830090 A EP 83830090A EP 0095445 A1 EP0095445 A1 EP 0095445A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
ring
rotating sleeve
sinker ring
sleeve
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Withdrawn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
EP83830090A
Other languages
English (en)
French (fr)
Inventor
Leopoldo Bertagnoli
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.)
Officine Savio SpA
Savio SpA
Original Assignee
Officine Savio SpA
Savio SpA
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 Officine Savio SpA, Savio SpA filed Critical Officine Savio SpA
Publication of EP0095445A1 publication Critical patent/EP0095445A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/10—Circular knitting machines with independently-movable needles with two needle cylinders for purl work or for Links-Links loop formation

Definitions

  • This invention concerns an improved cylinder with rotat-. ing sleeve to prevent twisting on circular knitting machines. and, in particular,on circular machines for stockings.
  • chine employs a system to pull the fabric which envisages elements cooperating with said stationary bush, such as a pair of scoop elements rotating substantially in step with the cylinder and gifted with an alternating axial motion which brings the periphery of each scoop element alternately. into contact with the fabric, which is interposed between the funnel-shaped portion of said stationary bush and the periphery of said scoop elements, whereby said fabric is thrust axially by the scoop elements, which thus produce the desired action.
  • elements cooperating with said stationary bush such as a pair of scoop elements rotating substantially in step with the cylinder and gifted with an alternating axial motion which brings the periphery of each scoop element alternately. into contact with the fabric, which is interposed between the funnel-shaped portion of said stationary bush and the periphery of said scoop elements, whereby said fabric is thrust axially by the scoop elements, which thus produce the desired action.
  • the main purpose of our invention is to embody an improved cylinder for circular knitting machines which is especially suitable for machines making hosiery and which has const-. ructional lay-outs that enable the unfavourable friction be-. tween the fabric and the inner part oi the cylinder to be eliminated so as to lessen considerably the times employed in the pressing operation.
  • Our invention also proposes further improvements concern ning the part of the cylinder which carries out the knitting. work.
  • Our invention aims to eliminate or lessen the aforesaid. problems and shortcomings by adopting specific means and suitable technical lay-outs.
  • the invention is therefore embodied in an improved cylinder with a rotating sleeve to prevent twisting on circular . knitting machines, and advantageously on circular machines for stockings, said cylinder being characterized by compris-. sing an inner sleeve rotating in cooperation with the part of the cylinder that performs the knitting, whereby said sleeve. cooperates at its upper end with the sinker ring through supporting means, and whereby supporting means and means for the vertical setting of the sinker ring are envisaged on the need- ,le cylinder, and whereby means are included which can hinder. .the vertical displacement of said sinker ring from its position of alignment on the needle cylinder.
  • the invention visualises supporting means and means for .the coupling of said inner sleeve to the sinker ring, said- means consisting respectively of a supporting surface obtain- .ed by making an annular cutaway portion on the upper surface .of the sinker ring, and of an 0-ring located between the sink- .er ring and the edge of the inner rotating sleeve which faces .said sinker ring.
  • said 0- .ring has the twofold task of setting and keeping in rotation .said inner sleeve during the operation of the knitting portion .of the cylinder and also, in cooperation with the surface 23,. of preventing the entry of dust and dirt between the sinker - .ring and the inner rotating sleeve.
  • the sinker ring is . .upheld not by fixed organs such as the cams of the sinkers, .but by the needle cylinder rotating with and solidly fixed to .said sinker ring, which is adjusted vertically by shin means. .which can be inserted between the sinker ring and the surface .of the cylinder that supports said sinker ring.
  • the inner rotat- .ing sleeve is not engaged with the knitting portion of the cylinder but rotates at an adjustable speed of rotation lower .or higher than or the same as the speed of said knitting port- .ion owing to the action of drive means cooperating with the .lower part of the rotating sleeve stretching along the lower .cylinder of the machine.
  • the improved cylinder 10 of the invention has a knitting portion consisting of the outer- cylinder 11 bearing the needles and of the ring 12 bearing .
  • the sinkers and a stationary portion consisting of a central tubular element 13, an inner tube 14 coaxial with said tubular element 13, the upper 15 and lower 16 cams of the sinkers; said cams 15 and 16 being lodged in a seating formed by the upper end 17 of said central tubular element 13, and of an .inner bush 18 screwed onto said tube 14.
  • an inner sleeve 19 is envisa- .ged which is coaxial with the cylinder 10 and rotates substan- .tially in step with the knitting portion of the cylinder 10; .said inner sleeve 19 cooperates at its upper end with the sin- .ker ring 12 and stretches downwards so as to cover the inner- .bush 18 fully.
  • Said sleeve 19 has a substantially flat portion 20 along- .side the sinker ring 12, a middle funnel-shaped portion 21 .and a lower tubular portion 22.
  • Said inner rotating sleeve 19 is upheld on a supporting. .surface 23 obtained by making an annular cutaway part on the .inner portion of the surface of the sinker ring 12.
  • an 0-ring 24 is . .visualized as being lodged in a circumferential groove 25 on .the upper edge of the sleeve 19 facing the sinker ring 12; . .when the rotating sleeve 19 is being fitted, said 0-ring 24 is forced against the sinker ring 12, which is provided with .a connecting surface 12' with a slight taper that tends to .keep the rotating sleeve 19 anchored to the sinker ring 12 be- .low an'inducting bevel 12" made to assist installation. The .mechanical union of said two elements is thus insured.
  • the O-ring 24 has the twofold task of anchoring the inner sleeve 19 solidly to the sinker ring 12 and, in cooperation with the surface 23, of preventing the entry of . dust or dirt which may cause difficulties during working, between said two elements 12-19.
  • the tubular portion 22 of said inner rotating sleeve 19 has on its periphery the sliding surfaces 26 cooperating with the inner surface 27 of the bush 18 so as to provide further. assurance of the guiding and alignment of the sleeve 19.
  • the employment of the rotat-. ing sleeve 19 entails full elimination of unfavourable friction of the fabric against the cylinder 10 and thereby the elimination of the permanent twisting of the fabric caused by said friction.
  • the sinker ring Furthermore, according to the invention the sinker ring.
  • the sustaining of the sinker ring 12 by the needle cylinder 11 makes it possible to prevent the weight of the sinker. ring 12 itself and the pressure produced by the pulling action from burdening the curved surfaces of the lower sinker .cams 16 and thereby to avoid shortcomings during rotation of. .the sinker ring 12 in relation to the stationary sinker cams
  • a further improvement of the. .cylinder 10 is intended to facilitate the replacement or ex-. change of one or more sinkers and consists in embodying a ton- .gue 32 to couple the sinker ring 12 to the needle cylinder 11, whereby said tongue 32 is solidly fixed to the sinker ring 12 .and has at its lower end a prong 33 cooperating with a circumferential groove 34 envisaged on the upper end 17 of the cen- .tral tubular element 13.
  • the inner rotating sleeve 19 is not engaged with the knitting part of the a cylinder 10 but rotates at/speed of rotation which may be the same as or higher or lower than that of said knitting part . and which can be regulated by actuation means 36 cooperating. with the lower part of the rotating sleeve 19 stretching along the lower cylinder of the machine, as shown in the non-restric- .tive example of Fig.2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP83830090A 1982-05-21 1983-05-04 Zylinder mit umlaufender Büchse zum Verhindern von Verdrehungen an Rundstrickmaschinen Withdrawn EP0095445A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8339582 1982-05-21
IT83395/82A IT1158111B (it) 1982-05-21 1982-05-21 Cilindro perfezionato con bicchiere rotante antiattorcigliamento per macchine circolari per maglieria

Publications (1)

Publication Number Publication Date
EP0095445A1 true EP0095445A1 (de) 1983-11-30

Family

ID=11321245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83830090A Withdrawn EP0095445A1 (de) 1982-05-21 1983-05-04 Zylinder mit umlaufender Büchse zum Verhindern von Verdrehungen an Rundstrickmaschinen

Country Status (2)

Country Link
EP (1) EP0095445A1 (de)
IT (1) IT1158111B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636980A1 (fr) * 1988-09-26 1990-03-30 Nagata Seiki Kk Dispositif de tension du tissu dans un metier a tricoter circulaire a deux cylindres
EP0454023A3 (en) * 1990-04-27 1992-02-19 Lonati S.R.L. Circular knitting machine with casting-off sinker actuation device
US5249439A (en) * 1990-05-22 1993-10-05 Uniplet A.S. Take-off device having radial grooves for circular knitting machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191019214A (en) * 1910-08-16 1911-06-15 William Henry Beale Improved Hosiery Circular Knitting Machine for use with Double Ended Latch Needles.
US2534460A (en) * 1949-02-07 1950-12-19 Scott & Williams Inc Sinker control means for circular knitting machines
US2736177A (en) * 1956-02-28 Knitting machine and method
DE1030961B (de) * 1952-08-01 1958-05-29 Carl Merz K G Maschf Rundstrickmaschine mit einer Steuerung fuer die Platinen des Maschenabschlages

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736177A (en) * 1956-02-28 Knitting machine and method
GB191019214A (en) * 1910-08-16 1911-06-15 William Henry Beale Improved Hosiery Circular Knitting Machine for use with Double Ended Latch Needles.
US2534460A (en) * 1949-02-07 1950-12-19 Scott & Williams Inc Sinker control means for circular knitting machines
DE1030961B (de) * 1952-08-01 1958-05-29 Carl Merz K G Maschf Rundstrickmaschine mit einer Steuerung fuer die Platinen des Maschenabschlages

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636980A1 (fr) * 1988-09-26 1990-03-30 Nagata Seiki Kk Dispositif de tension du tissu dans un metier a tricoter circulaire a deux cylindres
US4945734A (en) * 1988-09-26 1990-08-07 Nagata Seiki Kabushiki Kaisha Fabric tensioning device in a double cylinder circular knitting machine
EP0454023A3 (en) * 1990-04-27 1992-02-19 Lonati S.R.L. Circular knitting machine with casting-off sinker actuation device
US5152157A (en) * 1990-04-27 1992-10-06 Lonati S.R.L. Circular knitting machine with casting-off sinker actuation device
US5249439A (en) * 1990-05-22 1993-10-05 Uniplet A.S. Take-off device having radial grooves for circular knitting machines

Also Published As

Publication number Publication date
IT8283395A1 (it) 1983-11-21
IT1158111B (it) 1987-02-18
IT8283395A0 (it) 1982-05-21

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19840116

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19850321

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BERTAGNOLI, LEOPOLDO