FR2528455A1 - CONTINUOUS AUTOMATIC LIFTING DEVICE FOR SPINNING LARGE METRIC NUMBERS - Google Patents

Abstract

AUTOMATIC LIFTING DEVICE ON A LARGE NUMBER SPINNING MACHINE, CHARACTERIZED IN THAT IT INCLUDES, IN COMBINATION, TAKING UNITS, OR TAKING HEADS8, TUBES, MEANS ACTING ON THE SAID HEADS FOR THEY TO HOLD SEIZED, OR ON THE OPPOSITE, THE TUBES, MEANS OF EVACUATION18 AND TRANSPORT19 FOR FULL COILS1, MEANS OF PRESENTATION OF EMPTY TUBES16 AT THE TAKING HEADS8, A MOBILE TROLLEY11 CARRYING THE TAKING HEADS8 MOVING FROM BOTTOM UPPER AND "VICE TO TAKE THE FULL SEIZED COILS TO THE EVACUATION, TAKE THE EMPTY TUBES16 AND MOVE THEM TO PLACE THEM ON THE SPINDLES WITH THE COILS, ALL OF THE SAID MEANS REALIZING A COMPLETE LIFTING, THAT IS TO SAY NOT ONLY THE REMOVAL FULL COILS, BUT ALSO REPLACING EMPTY TUBES ON THE SPINDLES.

Description

1, The present invention relates to continuous spinning

  big numbers and more specifically targets a

  automatic lifting device, that is to say a device intended to evacuate the full reels and replace them with empty reels, or tubes. We know that the automatic lifting devices on

  continue to spin the big numbers, known today

  the, only carry out a kind of semi-emergence, i.e.

  that they only remove the full coils but do not

  empty tubes are not in place on the spindles thus released In addition, the sectioning of the wires before lifting

  full coils almost never work properly-

  is lying. It is understood, moreover, that for a very long time there have been automatic lifting devices on

  continuous called "fine numbers", which therefore have small bo-

  bines to evacuate and replace, but the situation is very different for "big numbers" Indeed, it is not

  possible to simply transpose the

  existing yarns for fine yarns for coarse yarn machines,

  by increasing the dimensions of the pieces or by strengthening them

  ç Small mechanisms which, until now, could, for example, be housed under the machine can no longer be since all the dimensions have increased, which requires

  to house them or place them elsewhere.

  Thus, the spacing between spools on a spinning machine for fine yarns has always, up to now, made it possible to accommodate the bobbins on standby between the full spools, which is no longer possible on a spinning machine for coarse yarns since, there, the spacing allows to accommodate only

  the full reel and not yet the standby reel.

  In addition, given the large dimensions of the coils for

  big wires and all the device that is called to them

  to work, the fundamental principles used for the threads

ends can no longer be.

  The object of the present invention is therefore to avoid the abovementioned drawbacks and above all to propose an automatic lifting device for continuous spinning numbers 2.

  big with all the mechanisms and adaptations that it requires.

  To this end, the subject of the invention is an automatic lifting device on a machine for spinning large numbers,

  characterized in that it comprises, in combination, or-

  grip ganes, or heads of tubes, means acting on said heads so that they hold, or on the contrary release the tubes, means of evacuation

  and transport of full reels, means of presentation

  tation of the empty tubes at the intake heads, a mobile trolley

  carrying it plug heads moving up and down

  and "vice versa" to bring to the evacuation the full coils

  nes seized, take empty tubes and move them to place them on the stripped spindles of reels, all of said means achieving a complete lift, that is to say not only the removal of full reels, but also

  replacing the empty tubes on the pins.

  According to an embodiment of the invention, the heads

  gripping means include members arranged to penetrate li-

  inside the tube and then undergo expansion

  in order to exert a clamping action against the wall

inside the tube.

  According to a preferred embodiment, a gripping head, of the pneumatic type, comprises two branches, one fixed and immobile, while the other, mounted to slide, is taken "sandwiched" at its folded end, between two inflatable hoses, one or the other

  depending on the phases of the operating cycle,

  premium. Other characteristics and advantages of the invention

  will emerge from the description which follows and from the examination

  attached drawings, which form part of the description,

  showing, by way of nonlimiting example, a mode of reaction

  reading of the invention; in these drawings: FIG. 1 shows, in cross section, a continuous spinning machine equipped with the automatic lifting device according to

  the invention; to allow compliance with relevant regulations

  surrounding the dimensions of the frame, this view has been cut into an upper part A and a lower part B which are 3. connected along C-C; Fig 2 shows, in front view, the pusher control mechanism; Fig 3 gives an embodiment of the mechanism of the gripping heads, and

  Fig 4 is a sectional view along IV-IV of Fig 3.

  FIG. 1 makes it possible to understand how the device according to the invention has an operation which performs a complete cycle, that is to say which ensures, thanks to the gripping heads,

  not only the removal of the full coils, but also

  ment the placement of empty tubes on the pins to

  replace the full coils from which they were stripped.

  In the drawings, 1 designates a full spool, 2 the wire delivered by the drawing system 3; 4 is the wire guide,

  5 the anti-balloon, 6 the ring slat; 7 is the dis-

  positive pusher, i.e. the slat which unlocks the coils 1 so that there is no resistance when the

  grip heads 8 are called upon to grasp them.

  The reel drive is controlled by the assembly

ble of the drum 9 and the straps 10.

  The gripping heads 8, the construction and function of which

  will be described in more detail below, are

  carried by a carriage 11 which is controlled, in its descent

  te and in its ascent, by a small motor (not shown)

  located at the top of the machine, the transmission of the

  vement being made by a strap 12 fixed to the carriage 11, which is guided by a rail 110 on which rollers roll 13 The end of the strap 12 is clamped in a flange 120 connected to a bracket 121 by a device 123

  for adjusting the stroke of the carriage 11, said equal

re being fixed to the carriage 11.

  At the upper part of the machine is provided a rack 15 containing empty tubes 16 This rack 15 is retractable by pivoting around an axis 46 provided at the upper part of the chassis, passing it from the

  position 15 in solid lines at position 15 'in dashed lines.

  The tube rack 15 is controlled by the biel-

  lettes 17 a and 17 b On the pivot axis 17 c of the connecting rod

  4. lette 17 a is a lever which is actuated by a jack,

  which is controlled by a contact during the different mo-

where it should intervene.

  The full reels 1, when released by the pick-up head 8 fall on an evacuation ramp 18 and slide on a conveyor belt 19 which takes them to the end

  The ramp 18, which rests on the rack 15, steps

  moves to position 18 'when the rack retracts to 15'.

  The start of the operating cycle is triggered by stopping, that is to say, the end of braking, of the machine after underwinding At this time, a contact

starts the cycle.

  From this moment the whole cycle takes place by

  successive contacts, i.e. after each operation

  tion a new contact is reached who orders the operation

  next tion and so on The whole therefore constitutes a programmer. At the end of the cycle everything is stopped, that is to say the

  machine and cycle Only after placing the machine

  straight empty tubes on the pins that the operator

  restart the machine itself -

  The cycle is as follows: the rack 15 carrying the empty tubes 16 is in the retracted (retracted) position 15 ′, the wire guides 4 are raised,

  the ring lath 6 and the anti-balloons 5 are mounted

  tees, the carriage 11 carrying the gripping heads 8 is lowered empty into the low position 11 ′, the pusher 7 is mounted at 7 ′, in the tubes of the coils 1 freely penetrate the branches 8 a and 8 b placed one against the other of the gripping head 8, one of the branches 8 b of the gripping head departs from the

  branch 8 a so that the full coil 1 is closed

  mement grasped, the pusher 7 is lowered, the ring lath 3 is lowered, 5. the carriage 11 carrying the gripping heads with the full coils 1 is mounted in the high position shown in solid lines, the rack 15 carrying the empty tubes 16 is advanced and with it the discharge ramp 18, the gripping heads 8 release the full coils 1 due to the elimination of the spacing of the branches; the coils fall on the discharge ramp 18 and slide on the conveyor belt 19 which takes them to the end of the machine,

  the rack 15 moves back to position 15 'with its ramp

  vacuation 18 'in order to clear the space in which the gripping heads 8 will pass, freed from the coils, the carriage 11 descends to the tube gripping position, that is to say defa ç o N that the gripping heads 8 are placed just above the tubes 16, the rack 15 advances from position 15 'to position 15 to present the tubes 16 to the intake heads 8, the intake heads 8 descend a little (position 8') in order to engage their branches, brought against each other, in the empty tubes 16,

  the plug heads are then made active by spreading

  both their branches and the empty tubes 16 are thus closed

  m ent blocked by the pressure exerted on their internal walls, the rack 15 moves back to position 15 'and the empty tubes, taken by the gripping heads, are released, the carriage 11 descends with the empty tubes 16 in position', c ' that is to say the position corresponding to the beginning of the penetration of the tubes 16 on the conveyor head 25, the gripping heads 8 are then rendered inoperative by the cessation of the separation of the branches and the tubes 16 fall on the pins, the carriage 11 carrying the gripping heads is raised to the high position,

  The machine is thus ready for a new Pen-

  during the operation of the machine, the rack 15, which

  is always in the retracted or retracted position 15 ', is

  manually filled with empty tubes 16.

  6. Such an embodiment has many advantages, apart from those already known and which are inherent in all automatic lifting devices such as saving time, saving personnel and therefore increasing the efficiency of the machine: since these are large and therefore heavy coils which must be evacuated, the fact that the staff no longer needs to handle them, great fatigue is spared him and he can, therefore, be used elsewhere?

  by the automatic lifting device the coils undergone

  feels less handling than during manual lifting-

  the, which preserves them from numerous malformations and even degradations and has an advantageous effect on

  the quality of the yarn and hence on the finished product.

  by equipping a "big numbers" machine with an automatic lifting device, it can acquire the

  same flexibility in work, in production, in change-

  ment of parts, in other words in handling and operation than that already known on machines

"fine numbers'.

  To clarify the description of the cycle above we use

will carry the following supplements:

  The wire guides 4 are arranged, during normal operation.

  male of the machine, just above pins 26 and, in

  the present case, just above the squeezing heads 25.

  During automatic lifting, the coils are removed and lifted in 1 'until their upper end is significantly higher than the conveyor head and,

  more, the gripping heads 8 come to take said bobi-

  nes full from above We therefore understand that the guides-

  wires 4 cannot remain in their working position and must be retracted The simplest solution, in

  this case, is to raise them, that is to say that all

  wires are mounted on an axis located along the frame and, by the rotation of this axis, they are all raised towards the

  top, what is called "raised wire guide" When the

  vee is made and the empty tubes in place they are put back

in their working position.

7.

  Regarding wire breakage during evacuation

  tion of the full spool, the portion of wire that must break

  is between the washers 33 and 34 So that this rup-

  ture is done in a sare manner, said washers 33 and 34 are provided with slots around their entire periphery so that the wire is taken there and breaks when the washer 34 rises with the coil 1 and the washer 33 remains stationary at

its place.

  As for the mechanism which controls the pusher 7, that is

  ie the slat which unlocks the coils 1 so that there

  has no resistance when the gripping heads 8 are ap-

  peeled to take them, works as follows

<Fig 2).

  The jack 38, the piston 39 of which is fixed to the part

  40 integral with the angle 41, acts on the ramp 42 also

  fixed on the angle iron 41 On the ramp 42 rests the

  roller 43 which, via the rod 44, is so-

lid of the pusher 7.

  Thus, when the jack 38 pulls the ramp 42 towards it, the pusher 7 rises and, when it pushes it back, the pusher

  7 descends, allowing the latter to execute the

  vail or the following cycle: (a) unlock the full reels

  nes 1 of pins 26; (b) break the wires 2; do that

  the coils 1, the top at least, protrude from the heads

  teuses 25; (d) mount the coils 1 to a height

  given, in order to present them to the gripping heads 8.

  When the gripping heads 8 have taken the coils 1, the pusher 7 returns to its low position by the opposite movement of the pistons 39, angle iron 41, ramp

42, roller 43 and rod 44.

  The mechanism of the gripping heads 8 (Fig 3 and 4) is designed as follows:

  The cradle 27 contains the hoses 28 and 29 which take

  sandwich the branch 8 b, folded square, of the socket head 8 The branch 8 a of the socket head 8 is fixed and immobile The branch 8 b of the socket head 8 is movable and

  can slide in the direction of arrow 30; she is often

  held and guided by the screws 31 and the washers 32 The 8. hoses 28 and 29 receive compressed air and, therefore, when the hose 29 is under pressure, the hose 28 does not

  is more and the branch 8 b of the plug head 8 is

  close to the branch 8 a of the plug head 8, which keeps the plug head inoperative; when the hose 28 receives the compressed air, the hose 29 releases its own and the branch 8 b of the intake head 8 departs at 8 b 1 (FIG. 4) from the branch 8 a of the intake head 8, which keeps the gripping head 8 in an effective position, that is to say that it holds the coil 1 by the tube 16.

  grip 8 in inoperative position, press again

  in hose 29 and let go of hose 28 and

and so on.

  Of course, the invention is not limited to the embodiment described and shown; modifications can be made to it, depending on the applications envisaged,

  without departing, for this, from the scope of the invention.

9.

Claims (3)

R E V E N D I C A T I O N S   1 automatic lifting device on a spinning machine for large numbers, characterized in that it comprises, in combination, gripping members, or gripping heads, (8), tubes, means acting on said heads so that they hold, or on the contrary release, the tubes, means of evacuation (18) and transport (19) of the full reels (1), means of presentation of the empty tubes (16) to the gripping heads (8) , a mobile carriage (11) carrying the gripping heads (8), moving from bottom to top and "vice versa" to bring to the evacuation the full reels seized, take empty tubes (16) and move them to place on the spindles (26) stripped of coils, all of said means performing a lifting   complete, i.e. not only the removal of the bo-   full wells, but also the replacement of the tubes empty on the pins.   2 Device according to claim 1, characterized in that the gripping heads (8) comprise members (8a, 8b) arranged to penetrate freely inside the tube (16) and then undergo an expansion in order to exert a clamping action against the inner wall of said tube.   3 Device according to one of claims 1 or 2,   characterized in that a gripping head (8), of the pneumatic type   tick, has two branches (8 a, 8 b), one (8 a) fixed and immobile, while the other (8 b), mounted to slide, is taken "sandwiched" at its folded end, between two inflatable hoses (28, 29) capable of receiving, one or the other depending on the phases of the cycle of operations, compressed air.