FR2626897A1 - - Google Patents

Abstract

The invention relates to a device for forming stitches on chain looms. According to the invention, the laying of son 7 in the form of flanges is carried out on the plates 3 of a plate bar 2 during the raising of the needles 1, while during their descent effecting the setting of the brackets, one forms, of this thread, another flange 12 which is moved towards the neighboring needle 11, forming a stitch in the next cycle of stitch formation. The plates 3 are fixed to the plate bar 2 and formed of two parallel parts, one of which has a wire guide eyelet 6 and the other is a blade having a projection 16 forming a groove 17, the plate bar 2 is mounted with the possibility of oscillating perpendicular to the row of knitting needles and a reciprocating motion along the row of knitting needles. The invention applies in particular to chain looms for the production of stitched knits and makes it possible to increase the productivity of the loom.

Description

The present invention relates to the trades-chai.nes

  and more precisely, it relates to a method of

  stitching on a loom and a

  tif of mesh formation for its realization. The inven--

  tion can be applied, with the greatest efficiency, to

  chain-trades, of the knitting and sewing type.

  A method for forming stitches on a melt (SU, A, 266125) is widely known, consisting in that the warp yarns, by means of stitches, embrace stirrup plates in forming flanges,

  are then transferred to knitting needles.

  The latter, after having taken the bridles, go down, carry out the slaughter of the old stitches, form new stitches from the bridles and ascend for the

erochetage.

  For the realization of this method, a device which includes a platinum bar

  platens forming meshes, moved perpendicularly

  on the line of knitting needles and a bar.re-passlets through the eyelets of which have passed

  son of chain. The bar _ passettes-is mounted with-

  the ability to move along the needle line

  the knitting and oscillating between the stirrup plates

  for laying on these, the son in the form of flanges.

  Now, said method and device have the disadvantage

  to cause the increase of the training-eycle of mail-

  they impose a number of operations such as:

  cement in front of the turntables with their bar-.le displacement of the pans along the line of turntables O30 and between the plates, to put on them,

  warp yarn, followed by the ascent of the trico-

  ter for taking the wires on the turntables. This sequence of operations not only complicates the process

  mesh size, but also increases the training time

  a row of meshes, which makes the process considered unproductive.

2626897.

  In addition, the guide bar encumbers the mesh area, makes the maintenance of the craft uncomfortable and requires

  a synchronization of the work of all the mechanisms

  part of the formation of the stitches.

  The aim of the invention is to create a method of forming meshes on a meticulket, as well as a device for forming meshes for its production, which would make it possible, by making several operations coincide, to increase the

  productivity and simplify the structure of the job-

chain.

  The problem thus posed is solved by the fact that, in a method of forming stitches comprising laying, by the plates, warp-shaped warp yarns on the knitting needles, the gripping of each flange by a descending needle, slaughter of the old mesh

  on the needle, the formation of a new mesh

  From the flange and the rise of the needle, according to the invention, the laying of each of the son in the form of a flange is performed during the rise of the needle, and moreover, simultaneously with the descent of the needle and the setting of the thread, this thread is formed by another flange which is moved towards the neighboring needle and which is placed on this needle when it is mounted in the next cycle of

mesh formation.

  Thus, the installation of a flange formed of a warp is in perfect coincidence with the rise and

  descent-of the needle which removes, from the technological cycle

  the parking of the needles during the execution time of the son laying operation on it.

  which, ultimately, increases the productivity of the process.

knitting.

  It is rational, simultaneously with the laying on the plates of the flanges formed of warp threads, to lay on these same plates wires of another chain, in the direction chosen according to the drawing, which will allow

  to expand the technological possibilities of the profession.

  The proposed problem is realized with the help of a

  knitting device of the trade-chalne, e.m-

  knitting needles moving back and forth, a turntable bar with turntables attached thereto, a mechanism communicating to said bar a

  oscillatory motion perpendicular to the line of needles--

  the knitting machines, connected to the art of command of the trade and to-

  said bar and, in accordance with the invention, each. plate comprises two parts mounted parallel to each other, at least in one of which is made a wire guide eyelet for passing a chaine wire the other part being executed in the form of a blade having a protrusion oriented towards the knitting needles and forming

  a groove to retain the wire coming out of the guide eyelet

  wire from the first part of the platen, the bar to plati, -.

  being mounted so that it can move

  back and forth along the line of needles

  dimensioned and articulated to the output element of the os-

  the platinum bar in the direction

  - dieulaire to the line of needles, to allow-to the bar

  to have two degrees of freedom of movement.

  Such a constructive execution of the plates and

  the platinum bar has made it possible to remove the

  settes as well as the mechanisms of its movement along I of the line of knitting needles and its oscillation

  in the interval between the decks, the function of the

  settes being filled by the decks themselves which

  simplifies the structure of the training device. sts.

  In addition, the loss of some of the operations of

  .0 above mesh formation made it possible to simplify the tra -: -

  jets moving work organs, delete, -

  of the teehnological cycle, parking the: needles and

  to reduce the stroke of the knitting needles. This perfee-

  has improved the dynamic conditions of the fono-

  tioning at high rotational speeds of the drive shaft and also reduced the total mass of the moving parts of the trade. The reduction of

  number of control mechanisms and of the total number of

  kinematics has simplified the maintenance of the

  profession, increased its reliability and its ability to repair

tions.

  Depending on the mode of execution of the turntables,

  platinum can have its eyelet-eyelet part either

  executed with an oblong portion

  This wire-guide eyelet is in the form of a pelletette, which offers additional conveniences when

threading.

  To reduce the friction of the wire against the protrusion

  platinum when moving the perpendicular bar

  to the line of knitting needles, it is rational

  that these protrusions of turntables are rounded.

  Depending on the execution version of the invention

  The oscillation mechanism of the platen bar, perpendicular to the line of triccating needles, is realized as a crank-rod assembly, which reduces the number of elements of the mechanism, decreases the total mass.

  moving parts and increases the speed.

of career.

  It is advantageous to mount at the output element

  of the oscillation mechanism of the platinum bar,

  in line with the needle line, a guide bar.

  for the sons of a second chalne so that this

  bar can exercise a joint dinosaur

  with the platinum bar and, moreover, a movement of

  back and forth along the needle line, in the direction

  chosen according to the drawing. This allows to vary the technological possibilities of the trade and to realize

  a mesh forming process with two threads.

  Thus, the method and device for training the

  meshes according to the invention make it possible to increase considerably

  productivity of the trade-chain, to simplify the structure of this trade, its maintenance, as well as to improve

  the dynamic conditions for the wires during sorting.

  In what follows, the invention is explained in the following

  of a detailed description of examples of realizations of the

  proposed method and device for its implementation, according to the invention, with references to the accompanying drawings, in which: - Figure 1 shows the forming members of the meshes of a loom-chain;

  FIGS. 2 a, b and c represent the formation

  10 flanges of a first row of stitches; FIG. 3 shows the slaughter of the stitches of the needles and the lateral displacement of the fleeces towards the neighboring needles;

  - Figure 4 shows the formation of meshes.

  r of the first row and the stopping of the platina over

neighboring needles.

  - Figure 5 shows the catch of the flanges for ..

  the formation of the second row of stitches; FIG. 6 shows the laying of wires using

turntables of another form.

  FIG. 7 represents, in side view, the

  According to FIG. 6, FIG. 8 shows the laying of wires using plates of another form;

  FIG. 9 represents, in view of the above,

in accordance with Figure B;

  FIG. 10 schematically represents mechanisms

  displacements of the platinum bar - -

  FIG. 11 represents an oscillation mechanism

  platinum bar, perpendicular to the line

knitting needle;

  FIG. 12 represents an execution version

  the hinge connecting the platinum bar to the output member of the mechanism according to Fig. 11; and - Figure 13 represents a training process

stitches with two chains.

  For the implementation of the proposed process, a provision

  tif of knitting forming part of a trade-

  knitting machine type is known to have

  1 triscoter leas (Figure 1) moved in a back-and-forth motion, for example, in a vertical plane and a

  platinum bar 2 having platens 3 formed, each

  one of two parts, for example, two blades 4 and 5.

  In each of the blades 4 and 5 are formed a wire guide eyelet 6 passing a string 7 forming a flange 8 (Figure 2), and a groove 9 (Figure 1). To allow the formation of meshes, the platinum bar 2 with the plates 3 is mounted so as to perform an oscillatory movement perpendicular to the line

  of needles to be traced, as well as a displacement of va-et-

  comes along the line of knitting needles.

  According to the proposed process, the training process

  desmailles is performed as follows.

  During the hooking operation of the old mesh, the needles 1 (FIG.

  in the hollow between the plates 4 and 5 of the plates 3. When

  the hooks 10 of the needles 1 have reached a height slightly exceeding the height at which the flanges 8 placed between the plates 4 and 5 of the plates 3 (FIG. 2 b) are situated, the latter beginning their oscillation

  in the direction of the backs of the needles, to a posi-

  behind the backs of the needle 1, transferring the flanges 8 to the stems of the needles 1 (Figure 2c). After this transfer, the needles 1 extend to carry out the slaughter of the old stitches and the formation of new stitches 11 by a known method, and the plates 3

  (Figures 3, 4), reaching their extreme position

  the backs of the needles, unfold, along the

  line of needles, to the neighboring needles 11 in

  wire, another flange 12. At the time of slaughter of the stitches, the plates 3 complete the movement along the needles and oscillate forwards towards the needles, stopping above the heads of neighboring needles Il1 and in doing so in this manner the installation of a flange 12 so that it can be taken by the next needle 1i1 during the rise of the latter during the next cycle of the formation 'meshes.

  After drawing the threads, the needles

  the 11 rise again for the erochetage and pass in the hollows between the plates 4 and 5 of the plates 3

  (Figure 5), to take the flanges 12, and the-cycle.

  mesh is repeated in a similar way.

  The displacement of the plates 3 along the line of knitting needles can be done both on the left and

  right, depending on the drawing to be made: -

  Consistent. to the version shown in Figures 6 and 7, each plate 3 consists of blades 13 and 14

  having the form shown in Figures 6 and 7. lei, ioei!

  the guide wire 6 is practiced only in laelame 13, the

  part 15 of the blade 13, in which the eye is

  let 6, has an oblong shape. On its front edge, -

  oriented to the needles 1, the blade 14poss: a sail-

  16 forming a groove 17 to retain the outgoing wire 7

eyelet 6 of the blade 13.

  According to the version shown in the figure

  8, one of the constituent parts of platinum 3 is

  mee by a blade 18, and the other, by a passette l9 -mounted

  parallel to the blade 18, at its upper edge:

  as shown in Figure 9. Just like the blade 14

  the blade 18 has a projection 20 and a groove 21.

lees 16 and 20 are rounded. -

  The process of forming meshes with

  3, according to these embodiments, proceeds in accordance with

  In addition to the decentering process above, in particular: after the heads of the needles 1 and 1 have been passed between the blades 13 and 14 or between the pellet 19 and

  the blade 18, the platinum bar 2 with its plates 3 os--

  backwards, ensuring the transfer of the threads on the knitting needles (FIGS. 6 and 8). After the heads

  needles have emerged from the hollow between the blades of the

  tines, the turntable bar begins to move along

  of the line of knitting needles, then, before

  specifically to the line of knitting needles, so

  to bring the wire guide eyelets 18 or blades

  Settes 19, in the second half of the cycle, to the position above the needles 1. These displacements are shown in Figures 6, 8 by arrows. After that, the needles rise again between the plates of the plates

  and the cycle of mesh formation is repeated.

  For these displacements of the bar 2 with plates, various mechanisms can be used, Thus, the control shaft 22 (figure '10) of the loom carries two mechanisms 23 of oscillation of said bar, perpendicular to the

line of knitting needles 1.

  -For moving back and forth from the bar to

  turntables 2 with the turntables 3 along the line of

  to knit them, we use a mechanism 25, mounted on a shaft 24, connected in a known manner to the control shaft 22, this mechanism can be cams and be in the form of a drum. drawing, or be lever and hinge. The output members 26 of the mechanisms 23 and 25 are linked by hinges 27 to the slat bar 2 to provide a two-degree of freedom of movement of this barge, i.e., along the line

  needles and transversely to it.

  Figure 11 shows a version of the type

  crank mechanism 23 oscillation of the bar to pla-

  tines in a direction perpendicular to the line of

  knitting gilts. From the control shaft 22, via an eccentric 28, a connecting rod 29 and an output or suspension element 30, the movement is communicated to the platen bar 2 which oscillates above the knitting needles in guides 31 rigidly

  fixed to the suspension 30 forming part of the articulation27.

  FIG. 12 represents an exemplary embodiment of articulation 27 comprising guides 31, which are fixed 1-a suspension 30, and rods with round section 32 rigidly coupled to a support 33 to which the plate bar 2 is fixed. Operated by the mechanism 25 (Figure 1), the rods.

  32 move back and forth in the guidelines

  to move to a selected distance-function

  the gauge of the trade and the drawing to realize.

  In order to obtain knit-type structures formed on two guide bars passing through a carcass or a web, the knitting device comprises a

  guide bar 34 with sockets 35 for one

  xth chain. The bar & guide 34 moves in

  guides 36 (FIG. 11) fixed, in a similar way to the guides

  31, to the suspension 30, under the action of a mechanism 3.7 (Figure 10) realized in a similar manner to the mechanism 25 and mounted on the shaft 24 had a phase shift of 180 '* As a result, the bar 34 is moved back and forth along the line of needles

  to knit, in the opposite direction to that of the movement

  2. Because the guide bar 34 is connected via guides 36 to the suspension 30 carrying the platen bar 2, this is not a problem. bar 34 exerts graceful movements perpendicular to the line of knitting needles together with the

bar 2.

  The formation of the trieves with two pass-bar

  according to the proposed procedure is carried out by the following fagann. Simultaneously with the formation, from the wires, of the flanges 12 (Figure 13) and with their installation, he sees the formation of flanges 38 from the threads of the second chain which are placed on the needles I in the direction contrary to that of the flanges 12. The upper ends of the flanges 12 of the first chain of the string are then located in the eyelets of the 19y passers and those of the flanges 38 of the second-chain, in the eyelets of the sockets 35. The lower ends of the flanges 12 and 38 are trapped in the knit formed shown in FIG. 13, conventionally in the form of arches of the old stitches. The needles 1, rising, penetrate into the hollow between the passette 19 and the plate 18 of the plate 3 o are already laid, cross-bridged, the flanges 12 and 38 and when the plate bar 2 and the guide bar 34 perform their simultaneous swing back from behind the backs

  needles, the latter descend by taking the breaks

  12 and 38 and forming the stitches of a knit of the type

  formed with two guide bars.

  In FIG. 13, the guide bar 34 with the strips 35 is shown, for obviousness, above

of the platinum bar 2.

  The direction of installation of the flanges 38 of son of the second chain may also coincide with the direction of installation of the flanges 12, which depends only on the drawing.

20. achieve.

RFE V E ND I ECAT IONS

  1. A method of forming meshes on a craft-

  chain, of the type including the laying, by plates, son of a cat in the form of flanges on knitting needles, the catch of each flange by a needle downhill, the slaughter of the old mesh are on the needle, the formation of a new mesh of the flange and the rise of the needle, characterized in that the laying of each of the son in the form of a flange (8) is performed [during the rise of the needle (1t), in that simultaneously-f ment with the descent-of the needle (1> and taking the wire, is formed from ee wire, another flange (12), that an

  move, 'to the next needle (11), and that one poses, on -

  this needle (1), when it rises in the following cycle

wind formation of the stitches.

  2. Method according to claim 1, characterized in that, simultaneously with the laying, on the plates (3),

  string flanges, we put on these same plati-

  flanges (38) formed from the yarns of a second warp in a direction selected in accordance with the drawing

to achieve.

  - 3. Device for forming meshes of a craft-

  Embodiment of the method according to claim 1, of the type comprising knitting needles displaced in a reciprocating movement, a platinized bar with platens fixed thereto, an oscillation mechanism of

  said platinum bar, perpendicular to the line of

  knitting yarns, connected to a control knot. of the loom - and to the turntable bar, characterized in that each tray (3) has two parts mounted parallel to each other, at least one of which has a wire guide lug (6) for pass a thread - of chasne, the other part

  being executed in the form of a blade and having a protruding projection

  to the knitting needles and forming a groove (17) serving

  retaining the wire emerging from the wire guide eyelet (6) of the first part of the plate, the platinum bar (2) being mounted so as to be able to move in a back and forth movement along the line of knitting needles and being coupled, by articulation, to the output element of the meechanism (23) of oscillation of the platinum bar, this

  movement being carried out perpendicular to the line of

  knitting gilts, to ensure: the bar a movement to

two degrees of freedom.

  4. Device according to claim 3, characterized in that the part of the plate (3) having the eyelet

  thread guide (6) is executed with a portion of oblong shape

  gue (15) which comprises in particular said guide-fit eyelet (6).

  5. Device according to claim 3, characterized

  in that the thread guide eyelet portion (6) of each

  tine (3) is made in the form of a passette (19).

  6. Device according to claim 3, characterized

  in that the projections (16, 20) of the blades (14, 18) of each

than platinum are rounded.

  7. Device according to claim 3, characterized in that the mechanism (23) of oscillation of the bar to

  platens perpendicular to the line of trilo-

quote is of the crank-rod type4

  8. Device according to claim 3 for realizing

  the method according to claim 2, characterized in that at the output member of the oscillation mechanism (23)

  the platinum bar perpendicular to the line of

  knitting yarns, is mounted a guide bar (34) for the threads of a second chain, having the possibility of an oscillating movement. exerted together with the turntable bar (2) and reciprocating along the line of knitting needles, in one direction

  chosen according to the drawing 'train.