FR2527239A1 - ELECTROMECHANICAL SELECTION DEVICE FOR SELECTING WORKING BLADES FOR THE NEEDLES OF A RECTILINE AUTOMATIC KNITTING MACHINE - Google Patents

Abstract

THE DEVICE INCLUDES AN ELECTRO-MAGNET 3, OF THE MOBILE ANCHOR 4 TO WHICH IS SOLIDARITY A LAMEL 9 WHICH SUPPORTS A ROD 11 FURNISHED WITH A SMALL DISC 12. AN EDGE PORTION OF THIS SMALL DISC 12 IS INSERTED INTO A SLOT 18 CARRIED OUT ON ONE END OF A ROD 14 SUBJECT TO ELASTIC ORGANS 17 AND SLIDING GUIDED BY A PLATE 1; THE OTHER END OF THE ROD CARRIES A SELECTION BODY 15 OF A BLADE 2. WHEN ELECTRO-MAGNET 3 IS DEEXCITED, THE SELECTION BODY 15 DOES NOT INTERCEPT A BALL 2A OBTAINED IN BLADE 2, WHEREAS , WHEN THE ELECTRO-MAGNET 3 IS EXCITED, THE ORGAN 15 INTERCEPTS THE TALON 2A, WHICH CAUSES THE LIFTING OF THE SAID BLADE 2 AND SUBSEQUENTLY SENDING A JOB OF THE LATTER.

Description

We know that in the automotive knitting machines

  rectilinear subjects each bed is provided with grooves

  equidistant in each of which are introduced

  at its upper part, a blade provided with one needle and, at its lower part, two blades arranged one

  behind the other, whose lower one is meant to enter -

  in work, if selected, the corresponding needle.

  This last blade has a lower heel

  with an intermediate heel, the latter being

  born to be intercepted by an appropriate selection body

  as a result of the activation of the latter; this inter

  ception causes a prefixed upward translation of the corresponding blade, this translation being sufficient for

  put in place the lower heel on the path of a

  fix me planned in the machine cart; when this cam intercepts said lower heel there is a new

  upward translation of the blade, which leads to

  the work training of the corresponding needle

dante.

  During the recent use of

  electronic controls intended to impose a machine cycle

  programmed, some machine builders of

  straight lines have used, as an international organization

  of selection, electro-magnets of the type provided with

  create reminder; the exit of this anchor from his home

  directly or indirectly because of the interposi-

  of suitable lever systems, the interception of the intermediate bead of the corresponding blade intended to drive the needle associated therewith, the latter having

been selected.

  The essential object of the present invention with

  is to propose an electro-mechanical device

  -2- born, if enabled, hha selection of a corresponding leaf blade in working a corresponding needle, adopting a technical solution that differs significantly from the already known technical solutions performing the same functions, all without having a negative impact on

  the reliability and functionality of the performance

  mances that the same device is able to offer.

  The features of the present invention

  are highlighted in the description which follows in

  referring to the appended drawing, in which:

  FIG. 1 is a side view of the device of the in-

  vention; Figures 2 and 3 show, in the direction V, the detail

  A of FIG. 1, the selection member remaining

  in his position of rest and work.

  Referring to the figures, there is indicated in 1 a plate attached to the carriage (not shown) of an automatic knitting machine from which only the

blade 2.

  This plate is secured to an electromagnet 3 whose anchor 4 is hinged at 5 to a spacer 4 a

  the core of the electromagnet; the free end of the year

  cre is provided at its lower part with a projection 6 in

  "V" shape intended to enter a complete dwelling.

  7 in one end of the remaining

toise 4 b.

  A lamella 9 protruding from the projection 6 is fixed to the anchor 4 on the opposite side with respect to the coil 8 of the electromagnet; at this lamella 9 is attached one

  ends of a metal strip 10, the other of which

  tremité abuts against a finger O 10 has solidarity of iten-

  tretoise 4 a: the elastic reaction of this band acts 3-

  on the anchor 4 in contrast with the magnetic force acting

  on the latter as a result of the excitement

of the coil 8.

  A threaded rod 11 provided with a small disk 12 facing the spacer 4b is removably fixed, by screwing, to the end 9a of the lamella 9, on the side

  outside relative to the anchor; the position of the little disc

  than with respect to the tree 1 e estréglable by means of a nut

13 associated with the rod'11.

  In 14 there is indicated a rod which passes freely through a through hole in the plate 1 and overflowing on both sides thereof; on one side of said plate the rod is provided with a selection member 15, provided with an inclined surface 15a which will be illustrated later, and a lateral stop 26 defining by its

  stop against the lower surface of the plate, the posi-

resting position I of the organ 15.

  A ring 16 is clamped on the other end of

  the rod 14, of the opposite side with respect to the member 15, this

  the ring acting as a stop for a coil spring

  dal 17 partially surrounding the rod and disposed between

the same ring and plate 1.

  On the extreme portion of the stem 14, beyond

  the ring 16, a transverse slot 18 is provided.

  born to freely receive a small portion of the small

  que'12. When the coil 8 is de-energized, the strip 10, the spring 17 and the stop 26 define the rest position I of the member 15 (Figure 2); in this position the surface 15a of the latter does not intercept during the translation of the carriage, the heel 2a of the blade 2 and by

  consequently the latter is not selected (posi-

4-

P 1, Figure 2).

  The excitation of the coil 8 causes the rotation of the anchor 4 along N, and consequently the translation of the rod 14 in the direction T, which causes the working position O of the member 15 (Figure 3); in this posi-

  tion, as a consequence of the translation of the carriage, the over-

  face 15 has intercepted the heel 2 a, which causes the transla-

  (S direction) of the blade 2 along a portion equal to "h" (position P 2 indicated in broken lines on the

Figure 3).

  This translation of the blade sets up a ta-

  1b (lower than 2a) along the path of a fixed cam provided in the carriage (not shown being of known type), which, intercepting the same heel 2b, causes further translation of the blade 2 according to the S meaning, which leads, as we know, sending work to

  the needle associated with the same blade.

  Obviously the coil 8 remains excited during

  enough time to select blade 2 (ie

  say to move the blade from the distance "h") When the

  coil 8 is de-energized, the device of the invention

  turns to its initial conditions (rest position of

the organ 15).

  Although the invention has been described with reference to a particular embodiment and merely as a non-limiting example, it is understood that modifications may be envisaged with regard to the construction details without departing however basic principles of it, as stated

  in the following claims.

-5-

R E V E N D I C AT I ON S

  1 Electromechanical device for selecting

  driving blades in working needles of a machine

  chine automatic rectilinear, each of its blades being provided with at least two heels, a ta-

  lon at its lower part and an intermediate heel

  diary, the latter being intended, if intercepted by a selection member, to cause the translation of the blade

  corresponding, which results in the establishment of

  this of the lower heel along the path of a fixed cam

  provided in the machine carriage; this cam, inter-

  cepting the same lower heel, causes another transla-

  the same meaning as the previous one, of that

  me and therefore the work training of the

  associated guille; characterized in that it comprises:

  three-magnet magnet (3) fixed to a plate, (1) provided in said

  carriage, the anchor (4) of which is articulated to the magnetic core

  tick (4 a) corresponding; first elastic members> (10) acting on said andre (4) in contrast with the magnetic force acting thereon; a coverslip

  (9) attached to the anchor (4) and projecting therefrom; one the-

  cylindrical member t 11) normally attached to the portion of said lamella (9) projecting from the anchor (4) and provided with a small disk; a rod (14) passing freely through a hole in the plate (1) and providing on one of its two end portions a selector member (15)

  of a corresponding blade and a transverse stop

  dirty :( 26) defining, by its abutment against the plate (1) the rest position> (I) of the same selection member (15),

  while on its opposite end to the orga-

  selection (15), it is provided with a transverse slot

  dirty, (18) for receiving an edge portion of the small -6-

  disc '(12); second elastic membersi (17) act

  on the rod (14) in contrast with the acti Qn exerted on it by the small disk, (12) accordingly

  the excitation of the coil (8) of the electromagnet (3).

  2 Device according to claim 1, characterized in that said cylindrical element (11 j) is a rod

  threaded which engages by screwing with the lamella (9) and

  if with a nut (13), the latter being intended to re-

  constantly glide the distance between the small disqued (12)

and the lamella (9).

  3 Device according to claim 1, characterized

  in that said second elastic members, (14) comprise a helical spring partially surrounding the rod, (14) and arranged between the plate (1) and a ring

  ) (16) clamped to the same shank (14).