FR2459310A1 - CIRCULAR KNITTING WORK - Google Patents

Abstract

SINGLE FONTURE, MULTI-CHUTES CIRCULAR KNITTING LOBBY, WITH PALLET NEEDLES OR NOZZLE, OF THE TYPE INCLUDING A ROTATING DIVIDED CYLINDER INTENDED FOR GUIDING AND HOLDING THE NEEDLES AND A DIVIDING CIRCLE ALSO ROTATING FOR THE DISPLOTING AND ORGUIDING GUIDANCE WITH THE NEEDLES, A TRADE IN WHICH THE MOVEMENTS OF THE NEEDLES AND PLATES ARE OBTAINED BY MEANS OF TWO SERIES OF FIXED CAMS. THE TRADE ACCORDING TO THE INVENTION IS CHARACTERIZED BY THE FACT: - THE DIVIDED CIRCLE CARRYING THE PLATES IS MOUNTED ON A FIXED CROWN WHICH ACTS AS A GUIDING AND POSITIONING ELEMENT; - THE PLATES ARE GUIDED BOTH BY THE DIVISIONS PROVIDED FOR THIS EFFECT IN THE CIRCLE, AS WELL AS BY DIVISIONS SHAPED IN THE UPPER PART OF THE CYLINDER; -THE ROTATION OF THE CIRCLE IS OBTAINED BY ACTION OF THE PLATES WITHOUT ANY LINK WITH THE CYLINDER. APPLICATION: JERSEY TRADE.

Description

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  The present invention relates to a circular knitting machine

  re, simple needle bed, with pallet or needle needles,

  profession which in the rest of the description will be designated by the former

pressure "jersey craft".

  The jersey looms, whether they are with paddle needles or

  needles, have been known for a very long time and are con-

  essentially based on a supporting frame:

  - (a) the actual knitting elements consisting of

  on the one hand, a needle bed or rotary cylinder, pre-

  sensing grooves or divisions in which are guided and

  the needles and, on the other hand, a circle of

  are rotated in synchronism with the cylinder, the platinets being movable orthogonally between the needles

  and being intended to promote the distribution of wires on

  guilles, the formation of the stitches and the maintenance of knitting when

the rise of the needles.

  The displacement of the needles and platinettes is obtained by means of fixed cams. In general, the profession has a plurality

  camessur games. its periphery, each game, designated by the expression

  "fall" or "system" to achieve a row of mail-

  the b) means for dispensing the threads to the needles; c) means for calling and winding the knitted fabric rotated in synchronism with the needles;

  - d) an engine and transmission means

  to evoke the rotation of the cylinder and winding means.

  Currently, the actual knitting members are mounted and controlled as shown schematically in FIG. 1. According to this conventional embodiment, the cylinder

  rotating 1 carrying the hands 2 is mounted on a circular tray.

  lair, secured to the frame 3, and is driven by means of sprockets

  not shown in this figure. The movements of the

  the 2 are obtained by means of cams 4 mounted on a

fixed support 5.

  In addition, a divided plateau 6 (circle) carrying the plati-

  net 7 is secured to the cylinder 1 by means of flanges 8 and is therefore driven in synchronism with the latter. Travel

  platinets 7 between the needles, in synchronism with the de-

  placements of the latter, are obtained by means of fixed cams 9.

  These cams 9 are also carried by a ring 10 secured together

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  with the frame of the loom 3 by means of columns 11.

  In addition to these bodies, knitting jersey knitting machines

  the beakers comprise individual pressers, movable in synchrony

  chronism with the needles and the platinettes, intended to close the needles of the needles at the opportune moment during the formation of the knitting. Recently, the Applicant has proposed in its French patent application No. 79/12531, filed May 11, 1979, a jersey needle needle beaker, simple design, in which the pressers are mounted on a divided circle carrying the platinets

  and are guided laterally by them.

  In both these types of occupation, although this is mitigated in

  the subject of the patent application No 79/12531, the

  and the downs of fibers tend to accumulate in the space

  this included between the cylinder 1, the platinets 7 (and possibly

  the pressers in the case of a needle-nosed magazine), the divided circle 6 and the fastening tabs 8. This hinders the

  smooth running of the trade and leads to long-term cleaning operations.

delicate and delicate to perform.

  In addition, the joining of the cylinder 1 with the circle of

  cradles 6 by means of fastening tabs 8, which is particularly difficult to

  the structure and performance of the profession.

  Now, it has been found, and this is the subject of the present invention, an improvement to the knitting machines jersey, whether they are needle vane or needle-nosed needle of the aforementioned type, which overcomes the disadvantages previous jobs and - which, on the one hand, greatly simplifies the assembly of the divided circle carrying the platinets and secondly, eliminates the accumulation of the flock and

  duvets below said platinets.

  In general, the invention therefore relates to a circular knitting machine, single needle bed, multichaut, pallet or needle needle, of the type comprising a rotary divided cylinder,

  for guiding and holding needles, and a dividing circle

  se, also rotatable, for holding and guiding

  are movable orthogonally with respect to the needles and

  to promote mesh formation and maintain knitting

  when moving the needles, a profession in which the

  the needles of the platinets are obtained by means of two sets of fixed cams, characterized by the fact that the divided circle carrying the platinets is mounted on

  a fixed crown which serves as a guide element and position-

  - that the platinets are guided both by the divisions provided for this purpose in the circle, as well as by divisions formed in the upper part of the cylinder, - and that the rotation drive of the circle is obtained by

  action of the platinets without any connection with the cylinder.

  The invention and the advantages that it brings will however be better understood thanks to the exemplary embodiments given below and which are illustrated by the appended figures in which: FIG. 1 illustrates, as said before, the structure

  the main knitting components of a conventional jersey loom

  Figure 2 is a partial sectional view of the main knitting members of a pallet needle loom according to the invention; Figure 3 is also a partial sectional view of the main knives;

  parts of a needle-nosed machine, of the type described in the application

  French Patent Application No. 79/12531, made in accordance with the invention

  FIG. 4 is an enlarged partial view, in perspective,

  showing in more detail the passage of the ends of two platinets-

  in the upper part of the cylinders carrying the needles.

  In the remainder of the description, the same references as

  used in Figure 1 will be used to designate

my organs.

  Figure 2 schematically illustrates in section the main

  parts of a pallet needle jersey craft.

  This business consists essentially of a frame 3 convention-

  The cylinder 1 is rotated by means of gears connected to a motor (elements not shown).

  In addition, platinettes 7 including the assembly and control of

  of, in accordance with the invention, will be seen in more detail in the

  following the description, contribute in combination with the

the 2, to the formation of the meshes.

  Such a loom comprises a plurality of knitting falls,

  each chute being equipped with cams making it possible to form a

  mesh. Each fall also includes means (guides

  26) for dispensing the thread 27 to the needles 2, this thread pro-

  coming from a support arranged in general above the loom.

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  In this figure, only one wire has been shown but it is

  It is obvious that there are as many as there are falls in the trade.

  Moreover, the knitted knit 12 is pulled and wound by hand.

  conventionally by means of elements rotated in synchronism with the rotating cylinder 1. In known manner, a divided circle 6 is arranged opposite the needles and carries the plates 7 movable between the

needles under the action of cams 9.

  According to the invention, the circle 6 is mounted on a

  fixed ring 20 which serves as guiding and positioning elements

  ment. This crown is secured to the building through

  of columns 11 distributed over the periphery of the loom.

  Advantageously, the ring 20 comprises a portion in relief 21 continuous, a recessed portion 22 complementary being provided in the base of the circle 6. The raised portion 21 may optionally serve as a guide rail, but essentially serves to play the role of a baffle on the one hand, to retain the lubricating oil, and on the other hand, to prevent duvets

  and wad to get into the slip path.

  The rotation drive of the circle 6 carrying the plates

  7 is obtained according to the invention directly by ac-

  tion of the plates and without any connection, such as for example fastening lugs with the cylinder 1. This drive is communicated directly by the plates 7 which are guided in

  grooves provided in the circle 22, as well as in grooves

  correspond to 31 at the top of the cy-

lindre 1 (see Figure 4).

  The platinets 7, during the rotation of the cylinder 1, drive

  circle 6 as well. Surprisingly, we have con-

  state that the transmission of the movement was done perfectly and

  that there was no abnormal wear on the end of

your 7.

  Advantageously, the circle of the platinettes is made of steel

  treated and the support 20 is made of cast iron.

  -35 Moreover, the lubrication is ensured by the overflow of lube oil from the needle beds, oil can be recovered in part by means of small tanks arranged under the tray

  (elements not shown in the accompanying figures).

  FIG. 3 illustrates an embodiment according to the invention.

  for a jersey-needle needle type of the type described in The only difference from the embodiment with

  pallet needles lies in the fact that individual pressers

  duels 30 are provided between each plate 7 to allow the

  closing needles 2 in a timely manner.

  Such an embodiment will not be described in detail. The two previous examples of embodiment clearly show the advantages provided by the invention. Indeed, the space 13 located below the platinets is, unlike previous looms in which the connection with the cylinder was obtained by means of clamps, completely free outwardly. In this way, the flocks can not accumulate and on the contrary,

  they tend to be trained outside the trade.

  This evacuation of the flocks can be further facilitated, as well

  that it is well illustrated in Figures 2 and 3 by realizing

  buckets 32 and 33 on the edges of the fixed ring 20 and the circle of

turnstiles 6.

  Moreover, the construction of such a trade is sim-

  it is made very simple by the cylinder and the circle of the platinets.

  In addition, it should be noted that training in accordance with the

  vention also has the consequence of giving a self-centering

  of the divided circle carrying the platinets.

  Of course, the invention is not limited to the mode of

  previously described, but it also covers all

  variants made in the same spirit.

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Claims (2)

1REVENDICATIONS   1 / Circular knitting machine, simple bedding, multichtes,   with pallet or beak needles, of the type comprising a di-   rotary target, for guiding and holding needles, and a divided circle, also rotatable, for holding and guiding the platinets movable orthogonally with respect to the needles and intended to promote the formation of meshes and to maintain the knitting at the displacement of the needles * craft in which the movements of the needles and platinets are obtained by means of two sets of fixed cams, characterized by the FeilF does.   - that the divided circle carrying the platinets is mounted on   a fixed crown which serves as a guide element and posi-   - that the platinets are guided both by the divisions provided for this purpose in the circle, and by divisions formed in the upper part of the cylinder, - that the rotation of the circle is obtained by   action of the platinets without any connection with the cylinder.   2 / Knitting machine according to claim 1, characterized -   in that the fixed ring serving as a guiding element and   positioned in the divided circle carrying the platinets   a portion in continuous relief, the base of the circle having a complementary recessed portion, these two elements forming a chicane   S 25 allowing the retention of the lubricating oil and preventing the   to enter the slip road.