EP0661396A1 - Sélecteur d'aiguille amélioré dans un métier à tricoter circulaire pour la fabrication de chaussettes d'homme et analogues - Google Patents

Sélecteur d'aiguille amélioré dans un métier à tricoter circulaire pour la fabrication de chaussettes d'homme et analogues Download PDF

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Publication number
EP0661396A1
EP0661396A1 EP94120075A EP94120075A EP0661396A1 EP 0661396 A1 EP0661396 A1 EP 0661396A1 EP 94120075 A EP94120075 A EP 94120075A EP 94120075 A EP94120075 A EP 94120075A EP 0661396 A1 EP0661396 A1 EP 0661396A1
Authority
EP
European Patent Office
Prior art keywords
arm
needle
heels
profile
socks
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Withdrawn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
EP94120075A
Other languages
German (de)
English (en)
Inventor
Jan Ando'
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.)
Macchine Tessili Circolari MATEC SpA
Original Assignee
Macchine Tessili Circolari MATEC 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 Macchine Tessili Circolari MATEC SpA filed Critical Macchine Tessili Circolari MATEC SpA
Publication of EP0661396A1 publication Critical patent/EP0661396A1/fr
Withdrawn legal-status Critical Current

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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
    • D04B15/66—Devices for determining or controlling patterns ; Program-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Program-control arrangements characterised by the knitting instruments used

Definitions

  • the present invention relates to an improved needle selector in circular knitting machine for manufacturing mens' socks or the like.
  • Circular knitting machines for manufacturing mens' socks or the like which have a needle cylinder that has a usually vertical axis and is affected by multiple peripheral longitudinal millings or grooves in which respective needles are mounted so as to slide vertically.
  • the needles rest, in a downward region, on the top of a respective sub-needle which is also vertically movable and can be actuated to move downwardly by a cam profile.
  • certain needles In order to modify the characteristics of the product being knitted, certain needles must be actuated upwardly with respect to a low needle position at each turn for a short extent, in order to place the needle so that it holds the stitch, or for a longer extent, in order to place the needle so that it casts off the stitch.
  • Knitting machines are currently set up so that the needles that must hold or cast off must be set and selected beforehand, since it is not usually possible to actuate the same needle sometimes with a short vertical movement and sometimes with a long vertical movement. Some machines that allow this selection have two selection units which are arranged in parallel and are therefore rather bulky and heavy and accordingly do not allow high speeds of operation .
  • Known selectors are constituted by an oscillating arm which is arranged on the same plane as the needle; its top is meant to abut from below against the sub-needle, and its lower end is selectively arranged in either a lateral position, in which it does not interfere with a lifting cam profile, or in a position in which it interferes with said profile: the length of the arm and the profile of the cam determine the possible vertical movement of the needle, which is fixed: either long or short.
  • a principal aim of the present invention is to obviate the described drawbacks of known devices, by providing an improved needle selector in a circular knitting machine for manufacturing mens' socks or the like that allows to freely select the needles which are meant to pass low, retain a stitch, or cast off a stitch according to requirements, without requiring replacement of any components.
  • An object of the present invention is to provide an improved needle selector in a circular knitting machine for manufacturing mens' socks or the like that has limited bulk and weight so that it can have a high operating speed.
  • Another object of the present invention is to achieve the above aim and objects with a structure that is simple, relatively easy to execute in practice, safe in use, effective in operation, and has a relatively low cost.
  • the present invention provides an improved needle selector in a circular knitting machine for manufacturing mens' socks or the like, of the type comprising an oscillating arm which is arranged on the same plane as the needle and has a top that is meant to abut from below against the sub-needle, characterized in that said arm has, at its base, two heels at different levels which are suitable to engage a lifting cam profile, and in that said arm is suitable to selectively move to a lateral position, in which the heels at different levels do not interfere with said lifting cam profile, or to two positions in which one of said heels interferes with said profile; the low position, the casting-off position, and the holding position of the needle being obtained respectively in said positions of the arm.
  • the reference numeral 1 generally designates an improved selector for needles 2 in a circular knitting machine for manufacturing men's socks or the like according to the invention.
  • the selectors and the needles are mounted in a known manner at respective longitudinal millings or grooves 3 which are distributed along the lateral surface of the cylinder 4: a respective sub-needle 5 is arranged below the needle and protrudes towards the outside of the cylinder with a lateral tab 5a that is suitable to be lowered by the lower profile of an annular cam 6.
  • the selectors are of the type constituted by an arm 7 that oscillates about a horizontal axis; the width of said arm decreases starting from its center towards its two ends, and the arm is arranged in the same plane as the needle; the top 7a of the arm 7 is meant to abut from below against the sub-needle.
  • the heel 8 of the arm is adapted to be arranged selectively in a lateral position, in which it does not interfere with a profile of a lifting cam 9, or in a position in which it interferes with said profile (figures 1 and 3 respectively).
  • the oscillating arm 7 has a second heel 10 at a different level and is suitable to assume an intermediate position, shown in figure 2, in which the second heel is arranged in a position in which it interferes with the profile of the cam 9.
  • the profile of the cam 9 rises from a ring 11 on the upper surface whereof the lower end 12 of the arm rests.
  • the needle remains in the low position or, when it travels over the cam profile, moves to a holding position or finally to a casting-off position.
  • the reference numeral 13 schematically designates the ring that guides and retains the selectors: reset levers, respectively 14 and 15, are present above and below the ring 13 and constitute means for returning the selectors to the intermediate condition shown in figure 2.
  • the arm 7 has two selection teeth 16 and 17 on its outer side in an upper position and in a lower position; said teeth can also be provided in series of positions shown in the figures (and referenced by the letters a, b, c, and d) and are suitable to be actuated by respective selection levers 18 and 19 which are mounted as shown in the figures (referenced by the letters a, b, c, and d); it is necessary to distribute the teeth and the levers at various levels due to their bulk, which prevents their arrangement at a single level: in the figures, the teeth in the positions "a" have been left white and the other positions that the teeth can assume have been colored black.
  • the operation of the selector according to the invention is evident: in the inactive condition, the arm is arranged as shown in figure 2; the arm is moved into this position by the reset levers 14 and 15, and in this position the interference of the cam with the heel 10 moves the needle so that it holds the stitch; starting from this configuration, if the lever 18 is actuated, the heel 8 is moved, figure 3, vertically above the cam profile 9 that raises the needle to the casting-off position; starting from the position shown in figure 2, if the lever 19 is actuated, the heel 8 and the second heel 10 move into a configuration in which they do not interfere with the profile of the cam (figure 1) and the needle remains in the low position.
  • the invention achieves the intended aim and objects, and in particular that it allows to instantly select, at will, which needles must remain low, which needles must hold the stitch and which needles must cast off, without requiring complicated, bulky, or heavy equipment so as to allow a high operating speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP94120075A 1993-12-31 1994-12-19 Sélecteur d'aiguille amélioré dans un métier à tricoter circulaire pour la fabrication de chaussettes d'homme et analogues Withdrawn EP0661396A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT93BO000532A IT1264306B1 (it) 1993-12-31 1993-12-31 Selettore perfezionato per aghi in macchina tessile circolare per la lavorazione di calzini o simili.
ITBO930532 1993-12-31

Publications (1)

Publication Number Publication Date
EP0661396A1 true EP0661396A1 (fr) 1995-07-05

Family

ID=11339387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120075A Withdrawn EP0661396A1 (fr) 1993-12-31 1994-12-19 Sélecteur d'aiguille amélioré dans un métier à tricoter circulaire pour la fabrication de chaussettes d'homme et analogues

Country Status (4)

Country Link
EP (1) EP0661396A1 (fr)
JP (1) JPH07216695A (fr)
CZ (1) CZ330894A3 (fr)
IT (1) IT1264306B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118854533A (zh) * 2024-09-20 2024-10-29 浙江伟焕机械制造股份有限公司 具有选针的双针筒袜机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004413A (en) * 1960-05-04 1961-10-17 Scott & Williams Inc Knitting machine
DE2937386A1 (de) * 1979-09-15 1981-04-02 SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbH, 7000 Stuttgart Mustereinrichtung fuer rundstrickmaschinen
EP0425996A2 (fr) * 1989-10-31 1991-05-08 LONATI S.p.A. Métier à tricoter circulaire avec un dispositif pour répéter la sélection d'aiguilles à au moins un système d'alimentation en fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004413A (en) * 1960-05-04 1961-10-17 Scott & Williams Inc Knitting machine
DE2937386A1 (de) * 1979-09-15 1981-04-02 SIPRA Patententwicklungs-und Beteiligungsgesellschaft mbH, 7000 Stuttgart Mustereinrichtung fuer rundstrickmaschinen
EP0425996A2 (fr) * 1989-10-31 1991-05-08 LONATI S.p.A. Métier à tricoter circulaire avec un dispositif pour répéter la sélection d'aiguilles à au moins un système d'alimentation en fil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118854533A (zh) * 2024-09-20 2024-10-29 浙江伟焕机械制造股份有限公司 具有选针的双针筒袜机

Also Published As

Publication number Publication date
CZ330894A3 (en) 1995-07-12
IT1264306B1 (it) 1996-09-23
ITBO930532A0 (it) 1993-12-31
ITBO930532A1 (it) 1995-07-01
JPH07216695A (ja) 1995-08-15

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