FR2655357A1 - RING SPINNING DEVICE. - Google Patents

Abstract

To obtain advantageous spinning conditions for a ring spinning device, the slider (7) of this device is composed of an annular body surrounding the bobbin (3) and which bears against the bobbin (3) via hoops (8) which are in flexible support against the spool (3), a hoop (8) carrying the guide eyelet (13) which guides the wire (4) arriving at the spool (3) in the region support of the hoop (8) against the coil (3).

Description

The invention relates to a ring spinning device comprising a

  spindle that can be driven, and

  intended to receive a coil and an annular guide

  concentrically turning the spindle and the spool and

  to guide a cursor with a guide eyelet

age guiding the incoming wire.

  In ring spinning devices, the

  fiber yarn which is drawn from a stretching train is

  routed, via an an-

  reels with a spool mounted on a driven spindle The ring spinning guide is generally composed of a cursor which rotates concentrically around the reel, on a guide ring, the cursor being hooked on

  the ring by two branches which surround the guide rail

  dage of the cursor by the two sides, and forms a guide eyelet for the wire brought to the reel, so that the wire brought to the reel in rotation drives the cursor with him Each rotation of the cursor results in a twist of the wire while the difference in rotational speed between the coil which is in advance and the cursor which is in delay determines the speed of winding of the wire The centrifugal forces which act, on the one hand on the cursor and, on the other hand on the wick of fibers which is driven in rotation using the spool using the cursor and which is twisted in this action to form a thread determine in combination

  with the guide forces acting on the wire, a

  full of tilting which acts on the cursor in the direction

  tion transverse to the guide track of the cursor, this

  which leads to a limitation of the rotational speeds ad-

  missiles for the cursor in prolonged operation To this is added the fact that the conditions of supply

  from wire to coil vary with increasing diameter

  be from the spool because the direction of exit of the thread from the guide eye of the cursor, which is tangential to the spool, varies with the diameter of the spool, which crots during the winding operation. yarn drawing conditions and the winding conditions in the region of the annular spinning guide results in varying yarn stresses, which are detrimental, especially in the case

  high cursor rotation speeds.

  The object of the invention is therefore to give a ring spinning device of the kind described at the start a configuration such that, on the one hand, it is possible to ensure high speeds of rotation of the cursor and,

  on the other hand, substantially consistent drawing conditions

  aunts for the wire which is brought from the annular spinning guide

reel-to-reel.

  The invention solves the problem posed by the fact

  that the cursor is composed of an annular body which

  turns the reel and is engaged in the annular guide, and which bears on the reel by means of hoops pressed loosely against the reel and in that a hoop carries the guide eyelet in the region

support of the roll bar on the spool.

  Thanks to the presence of an annular body which

  turns the spool and is held in a way that

  turns relative to the guide ring, the cou-

  The tilting force generated by the guide forces of the wire is perfectly transmitted and absorbed by the slider. The centrifugal stress

  one-sided slider rotating on the guide ring

  ge therefore disappears and the construction with central symmetry of the cursor prevents it from developing a constraint

  centrifugal acting outward The additional support

  nel of the annular body against the coil via-

  diary of the arches which are in contact with the coil

  loads the annular guide, so that one can reach

high rotational speeds.

  The poles must be attached

  puyés against the reel in a flexible way, so that ac-

  increase in the diameter of the coil resulting from the

  wire rolling can be compensated Because the guide eyelet is arranged in the bearing region

  a hoop against the coil also allows

  prevail or at least reduce to a negligible degree the

  harmful relationship of dependence which binds the conditions

  wire drawing in the region of the guide eyelet to the diameter of the spool because the eyelet of

  guidance hardly changes position compared to

  port on the surface of the spool, so that in total, one can obtain the conditions of drawing of the wire which remain

  substantially constant, even at high ro-

cursor position.

  According to another characteristic of the invention,

  one can reach particular construction conditions

  particularly simple in that the annular body of the cursor is made up of at least two arches assembled

  to each other at their ends, which surround the bobi-

  ne in a layout with central symmetry, with a perimeter of a length greater than that of the

  perimeter of the coil, are elastically against the bo-

  bine and are held in the annular guide by

  skates with a game giving a free movement

  dial The fact that the length of the perimeter of the poles is greater than that of the perimeter of the coil has the effect that the poles deviate from each other with

  the increase in the diameter of the coil when the pa-

  tins are retained in the annular guide with a set of

  radial displacement, to compensate for the ac-

  diameter increase in one direction by reduction

  corresponding diameter in the other direction.

  Thanks to the elastic construction of the hoops, the latter remain pressed against the spool regardless of the

  diameter of the spool, which is important for the purchase

  from the wire to the spool through the guide eyelet

  ge expected in the contact region.

  The slider arches that form the body an-

  not just rotate around the box

  but they must also be able to move in trans-

  axial relation to the coil, so that

  must take into account the friction conditions that exist

  tent between the poles and the coil, which is obtained, for example, by the fact that the poles carry in the region of support against the coil of the sliding parts which advantageously have a sliding surface

  curved in order to establish forward sliding conditions

  taggers for the relative displacement of the hoops in relation

  port to the coil as well in the circumferential direction

  only in the axial direction.

  In the drawing, the object of the invention is shown

  shown as an example In these drawings, FIG. 1 represents a spinning device

  ring according to the invention, in a dried top view

  matic, with partial tears, and with an empty spool;

  FIG. 2 is a representation of the device

  tif ring spinning corresponding to Figure 1, with a full spool; Figure 3 is a section along line III-III of Figure 2, on a larger scale; Figure 4 shows the ring spinning device in a vertical section taken along the line IV-IV of Figure 1, on a smaller scale; and Figure 5 is a vertical section along the line V-V of Figure 1, also on a smaller scale. The ring spinning device shown is essentially composed of a spindle 2 driven by

  via a grooved pulley 1 which is intended

  born to receive a spool 3 to which the wire 4, formed from a strand of drawn fibers, is routed by

  through a ring spinning guide which

  takes an annular guide 6 which guides a cursor 7 Ce

  cursor is composed of an annular body surrounding the box

  bine and which, in the embodiment, is composed of two arches 8 pressed elastically against the coil 3, each of which is formed of an elastic arch bent in a V and which carries a pad 9 in the region of junction of its two branches, each arch being assembled by the ends of its branches at the ends of the branches

  of the opposite arch 8, as indicated in par-

  particular by the assembly parts 10, in particular in FIGS. 1 and 2 Given that the two arches 8 surround the coil 3 in an arrangement with central symmetry, and with a perimeter of greater length

  to that of the perimeter of the coil, the branches of the ar-

  those 8 which bear against the reel 3 move apart

  each other when the diameter of the coil increases

  increases during the winding operation, which inevitably

  the effect of a radial displacement of the pads 9

  towards the inside, these pads must be held for this

  bare in the annular guide 6 with a radial clearance At this

  in fact, the annular guide 6 presents in cross-section

  dirty a U-shaped profile between the branches of which the pads 9 are engaged In order to be able to provide a guide clearance adapted to the different circumstances between the pads 9 and the branches of the annular guide 6 which maintains these branches in the axial direction, the two branches of the guide ring having a U shape in cross section can be adjusted relative to each other in the axial direction, as shown

in figure 3.

  Yarn 4, which is routed to slider 7 during the spinning process, through an eyelet

  11 and a guide ring 12 serving to limit the de-

  viation of the wire in formation which would result from the centrifugal force, passes through a guide eyelet 13 provided in the region of assembly of two ends of branch of the arches 8, in line with the closing part, eyelet

  through which it is tangential-

  with the spool 3 When the diameter of the spool increases, the branches of the poles 8 move away from one another under the thrust of the spool, until the poles 8 pass from one position starting point, shown in Figure 1, at a final position shown in

  Figure 3 In this movement, the guide eyelet

  substantially serve its position relative to the surface of the spool, so that the conditions for drawing the

  thread through the guide eyelet 13 cannot go

  laugh to an extent that would be prejudicial to the process

  extra spinning We can therefore obtain very large vi-

  rotation braids for the cursor, even for prolonged operation To reach conditions

  advantageous sliding between the arches 8 and the over-

  face of the coil, the branches of the arches 8 can be provided in the region of support against the coil 3 with

  sliding parts 14 which, according to the example of realization

  tion, are formed by sleeves threaded on the branches

ches des arches.

Claims (3)

R E V E N D I C A T I O N S   1 Ring spinning device, comprising a drivable spindle, intended to receive   a coil, and a concentric ring guide surrounding-   the spindle and the coil, which is used to guide a cur-   sor having a guide eyelet for the incoming thread, characterized in that the cursor (7) is composed of an annular body which surrounds the spool and is engaged in the ring guide, and which is supported on the spool ( 3) by means of arches (8) pressed loosely against the coil (3) and in that an arch (8) carries   the guide eyelet (13) in the support region of the ar hoop (8) against the coil (3).   2 Ring spinning device according to the resale   dication 1, characterized in that the annular body of the   cursor (7) is composed of at least two arches (8) as-   seem to each other at their ends, which surround   the coil (3) in an arrangement having a symmetry   central sort, with a longer perimeter   to that of the perimeter of the coil, are supported elasti-   only against the coil (3) and are held in the   annular guide (6) by pads (9), with a given clearance   giving freedom of radial movement.   3 Ring spinning device according to the resale   dication 1 or 2, characterized in that the hoops (8) carry sliding parts (14) in the region bearing against the coil (3).