FR2515697A1 - FRICTOR FINISHER IN WHICH AT LEAST THE SUCCESSIVE PAIRS OF FRICTION GROUPS ARE DRIVEN BY TRANSMISSIONS CONNECTED TO A SINGLE DRIVE SHAFT - Google Patents

Abstract

PERPENDICULARLY TO THE DRIVE SHAFT 9 WHICH EXTENDS THE ENTIRE LENGTH OF THE MACHINE, ARE ARRANGED BOX-SHAPED SUPPORTS 8 WHICH CARRY, ON THEIR OPPOSITE SIDES, THE SUPPORTING ROLLERS OF PAIRS OF FRICTION SLEEVES 6, 7 PLACES L 'ONE FOLLOWING THE OTHER DOWNSTREAM OF TWO SUCCESSIVE 5 STRETCHING GROUPS. THE SUPPORTS 8 INCLUDE THE APPROPRIATE CINEMATIC CHAIN TO PRINT THE VARIOUS SLEEVES WITH A CONTINUOUS ADVANCEMENT AND THE ALTERNATIVE LATERAL MOVEMENTS NECESSARY FOR THE RUBBERING. THESE DRIVE CHAINS ARE CONTROLLED FROM TWO SEPARATE GEAR WHEELS 10, 11 SHIMS ON THE DRIVE SHAFT 9. THE STRETCHING UNITS 5 PLACES UPSTREAM OF THE FRICTION UNITS 6, 7 CONTROLS BY THE TRANSMISSION CONTAINED IN THE SUPPORT 8 CAN TAKE THEIR MOVEMENT ON THE MAIN DRIVE SHAFT 9 BY MEANS OF AN APPROPRIATE TRANSMISSION DISTINCT FROM THE ONE MENTIONED ABOVE. THIS DEVICE IS INTENDED TO CONTROL THE RUBBER FINISERS WITH DEVELOPMENT IN A VERTICAL PLANE AS WELL AS THOSE TO DEVELOP IN A HORIZONTAL PLANE.

Description

The present invention relates to a friction finisher in which at

  minus the successive pairs of friction groups, each of which is placed downstream of a stretching group, are actuated by transmissions connected to a single control shaft. In the known friction finishers of the type with development in a vertical plane, and also in those of the type with development in a horizontal plane, the control of the friction groups and of the drawing groups is ensured by long shafts generally composed of sections connected together by means of seals which carry the controlled rollers over which the sleeves pass or, respectively, the cylinders controlled by the drawing benches These shafts extend

  along the entire length of the machine and are rotated

  tion, or driven in alternating longitudinal movements

  by transmissions housed in the lateral heads

the machine.

  This type of structure does not agree well with the trend

  modern dance to increase as much as possible the length of the machine in order to ensure that it includes the greatest possible number of working groups or what are called "working heads" each or

  each can ensure the formation of one or two bobi-

nes.

  In addition, in the event that it is necessary to replace

  place the friction sleeves, which constitute the

  nes of the friction finisher most subject to wear, or the cylinders of the stretching benches which are subjected to the action of the pressure rollers, it is necessary to disassemble entire sections of the different shafts which extend over all the length of the machine, resulting in a loss of time and the stopping of

  the whole machine for periods of a certain length

  which leads to significant production losses.

  The object of the invention is to eliminate these drawbacks, that is to say to eliminate the need to provide trees.

  long (which must have a high resistance to tor-

  ) and the need to resort to rather long operations which require the intervention of highly qualified personnel in the case of sleeve replacement. According to the invention, these objects are achieved by producing a friction finisher of the type in which, between the opposite lateral heads, a series of working heads are arranged, each of which is intended to carry out the simultaneous drawing and rubbing of at least a wick and the winding of this wick into a coil on a tube, friction finisher which is characterized in that at least the various friction groups each of which is placed downstream of a drawing group, are actuated by of

  transmissions connected to a single long drive shaft

  tudinal which is rotated by a motor located

  next to one of the side heads of the machine.

  Other features and advantages of the invention

  tion will appear during the description which follows

  see the attached drawings, given only as

example,

  Fig i is a front elevational view, schematically

  tick, of a friction finisher developing in a vertical plane according to the invention;

  Fig 2 is a section, shown at larger

  ladder, taken along the vertical plane which contains the axis of the main drive shaft; Fig 3 is a section along line III-III of Fig 2; Fig 4 is a section along the line IV-IV of Fig 3; Fig 5 is a view taken in the direction of

arrow V in Fig 2.

  The machine shown in the drawings is a friction finisher of the development type in the vertical plane. This device comprises a chassis designated as a whole by the reference l and which is formed by two opposite lateral heads, 2 and 3 respectively, which contain the various main drive and control members of the machine. Between the opposite side heads 2 and 3 of the

  machine, a series of double work heads are mounted

  bles, arranged at regular intervals, which are intended

  born to treat the wicks 4 Each of the working heads comprises a drawing group 5, of a type known per se, and a wiper group consisting of two pairs of wiper sleeves, 6 and 7 respectively, which are worn door-to-door. false by the opposite sides of a support 8 in

  form of box which is fixed to the frame of the machine.

  Below these supports 8 is disposed the main control shaft 9, which extends over the entire length of the machine and which is actuated by motor means,

  not shown, contained in one of the side heads.

  A pair of toothed wheels, 10 and 11 respectively, are provided at the right of each support, which are

  wedged on this tree and on which are taken, respecti-

  vement, the drive of the sleeves of pairs 6 and 7, and the alternating axial movements of some of these sleeves. On the toothed wheel or pulley 10 passes a toothed belt 12 which transmits the movement, via the toothed pulley 13, to the shaft 14 rotatably mounted in

  the left wall of the box-shaped support 8 (Fig 4).

  The wheel 15, integral with this tree, transmits its movement

  ment, via the toothed wheels 16, to the toothed wheels 17 and 18 (Fig 4 and 5) wedged on the shafts which carry the driving rollers of the sleeves of the upper pairs 6 and lower pairs 7 The toothed pulley il, which is composed of three segments of

  different diameter, transmits its movement, through a

  toothed wheel 19, with toothed pulley 20 (Fig 4) wedged on the shaft 21 which carries the cam 22 The latter acts

-15697

  on cam follower rollers 23, carried by arms integral with the support which supports the shafts carrying the driving rollers and the return rollers of the

  sleeves which must move axially.

  By moving the pulley 11 axially along the shaft

  9, the transmission ratios can be varied

  mission so as to get different numbers of mo-

  alternative rubbing clothes at each turn of the tree

9.

  The structure described above presents the

  ge to make easily accessible the sleeves of pairs 6 and 7 respectively This results in a reduction of the time which is necessary for the replacement of the sleeves and of the durations of machine stoppages, with

  obvious and significant reductions in operating costs

  operation. These costs are furthermore considerably reduced also thanks to the removal of long and heavy trees.

  driven in alternative axial movements.

  Finally, we note that the structure described above lends itself to the construction of machines which have a number of working heads greater than that which can be obtained with construction machines.

  known since we are in the presence of a transmission tree

  single sion which can have a large diameter, so as to have a high resistance to torsional stresses and a small angular deformation in response

to such requests.

  As already pointed out above, this structure lends itself to being adopted also in rubbing finishers developing in a horizontal plane and it can still be modified by taking it directly from the main control shaft 9, via an additional mounted transmission

  in parallel with that which controls the friction sleeves

  teurs, the movement of control of the stretching groups which surmount the pairs of friction groups carried cantilevered by the opposite sides of the box-shaped supports containing the transmission members which control the advance and the axial axial displacements sleeves.

Claims (3)

  1 Rubbing finisher of the type in which, between the opposite lateral heads, a series of working heads are arranged, each of which is intended to effect the drawing and the simultaneous rubbing of at least one wick and the winding of this wick in one coil on a small tube, characterized in that at least the different friction groups, each of which is placed downstream of a drawing group (5) are actuated by transmissions connected to a single longitudinal control shaft (9) which is rotated by a motor located opposite   of one of the side heads (2, 3) of the machine.   2 friction finisher according to claim 1, characterized in that the friction groups (6, 7) placed downstream of two successive drawing groups (5) are carried in cantilever by the opposite sides of a support ( 8) in the form of a box fixed to the frame of the machine and which contains the transmission which controls the advance of the corresponding sleeves and the axial movements of certain of them.   3 Wiper finisher according to one of the claims   cations 1 and 2, characterized in that the movement of   drawing groups (5) located upstream of the friction groups   teurs (6,7) controlled by the transmission contained in   the same box-shaped support (8) is taken on the rear   main bre (9) via transmission   distinct from the transmission mentioned above.