FR2501658A1 - WINDING CHUCK FOR WINDING OF DIVERSE NARROW FOLDS - Google Patents

Abstract

THE INVENTION RELATES TO A WINDING CHUCK FOR WINDING NARROW SPLIT STRAPS. THE CHUCK 14 OF THE INVENTION INCLUDES ELASTIC SEALS 17 HAVING FRICTION COATINGS 23 EMERGING FROM WINDOWS PRACTICED IN THE PERIPHERAL SURFACE 14A OF THE CHUCK AND COMING TO PRESS AGAINST A SUPPORT BODY 35 CORRESPONDING TO EACH NARROW STRAP. AS SOON AS THE TENSILE EXERCISED ON THE STRIPES IS EXCESSIVE, THE ADHESION FORCE PRODUCED BY THE COMPRESSED AIR AND NOW THE SUPPORTED BODIES 35 ON THE CHUCK 14 IS OVERCOUNTED. THE SUPPORTED BODIES 35 THEN CARRY OUT A RELATIVE MOVEMENT WITH RESPECT TO THE CHUCK 14 UNTIL THE TRACTIONS EXERCISED ON THE STRIPS MATCH. THE INVENTION IS USED TO OBTAIN HOMOGENOUS ROLLS OF NARROW STRIP.

Description

the invention has a winding mandril for winding up

  Together, the smaller divided widths of narrow strips are mounted on supports which are mounted so that they can be turned over and can be urged by the friction elements.

  When winding metal strips

  In strip splitting plants, depending on the thickness of the different split strips, different windings are obtained on the strip winder, ie the divided strips

  thicker form coils of larger diameter

  meter and that, therefore, these windings

  They are always wound more and more in total tension, so that in the end they are wound too tightly, while, conversely, the thinner divided strips are wound in coils becoming more and more loose. This is the reason why, as a result of the strip splitting facilities, the individual bobbins have already been installed following the number of dividing strips. However, this system is very expensive and at best it is profitable. in special cases, but not in a case of application

  where a program of variable widths is planned.

laughing frequently.

  In addition, it was proposed to submit

  subdivided several laws in the direction of the long-term

  has a decelerated braking effect by means of different

  Various devices such as tensioning rollers or metal strip brakes are, for example, known to be a longitudinally dividing plant having a device installed to lift the winder to brake the beasts. Divided (German Patent Application DE-OS 1,552,598) In this case, with divided sheets of different thicknesses, rolls of the same diameter are obtained by imposing, at divided strips more important, a greater pulling stress due to the direct action of

  braking bands on the divided strips. Toute-

  However, this direct action exerted on the divided strips has serious drawbacks with the generally sensitive materials which are dealt with and the strips, which are frequently very thin or fragile, there are modifications or alterations in the surface of these strips.

  Consequently, in order to avoid such deterioration

  it is known (patent of the Republic

  German Federal Patent No. 1,804,178) to tension the narrow strips, before winding on the common winding mandrel, in a braking device preceding the winding device by sliding, on a return roller, several rings of which the Rotation is braked by a uniform axial pressure force, thereby adjusting the tension of the narrow sheets passing over these rings. The axial pressure force is transmitted to the sidewalls of the hubs of the rings by means of friction disks and via inflatable chambers interposed between the rings and connected to the source of compressed air via the tubular axis of the return roller. As a result, a braking force which is the same for all the rings, is exerted on the latter, which are driven during the process of winding the guns. In

  In the first place, the rings can perform movements

  angles relative to each other according to the different tensile stresses exerted on the

  narrow strips scrolling on these rings.

  In addition, according to the state of the art

  application for a patent of the Federal Republic of Germany

  DE-AS 2,627,861), it is known to fill the winding shaft or the winding mandrel with a winding of a number of clamping rings mounted so as to be able to rotate on the shaft of water and water. to engage radial flanges of clamping clamps on

  the friction of the friction rings installed

  on the shaft di wound between neighboring clamping rings. These rings are used to receive a

  winding sleeve q (when sliding on the

  winding and extending over several rings

  Clamping. On this winding sleeve,

  rolls a strap, the tightening rings transmit-

  both the winding pull at this sleeve of

  rolling. With this known device, one can not

  roll only one strip on the bushing

  ment, thus avoiding the problem of different

  annuities exerted on the strips and resulting from divided widths of narrow strips of different thicknesses which are wound on a common mandrel. If, on the other hand, several strips are reeled together

  narrow, a braking device must always precede

der the winding mandrel.

  The object of the invention is to

  the winding mandrel of a winding device

  for the common movement of several widths

  targeted narrow strips so that after

  to have left the shears, the divided strips can-

  s5 be coiled on (this chuck forming rollers)

  homogeneous waters and this, without the split strips must go through a brake p ~écédant the winding device. According to the invention, this object is produced by means of a tubular winding mandrel which can be connected to a source of a pressure medium while

  that, on its periphery, there are several

  elastic strands extending the entire length of the winding mandrel and can be introduced into the

  peripheral surface of this mandrel, the latter comprising

  Also, windows that are machined in

  areas of the elastic fittings in the perimeter

  They allow the output of friction coatings which are suitable for elastic linings and which can be applied against the support bodies. Therefore, the winder serves not only to form the roll, but also to adjust at the same time the pulls exerted on the

  different sheets divided by the fact that

  awarded to the winding mandrel

  formally inside the latter, while the friction coatings coming out of the windows exert, with the intervention of the elastic linings, a determined force against the support bodies which are made,

  preferably in the form of rings of synthetic material

  tick, thus firmly holding these support bodies

  on the winding mandrel. The aforementioned force is cal-

  such that, if a thicker and therefore shorter shorter strip is too tight

  during winding, the ring corresponding to

  synthetic material performs a relative movement vis-à-

  screw of the winding mandrel. During this phase of relative movement, only the divided strips more

  Longer and thinner are wound. This mode of operation

  continues until the pulls exerted

  on the strips have again become almost equal.

  By judiciously choosing the material of which

  friction coatings and support bodies, the friction value can be determined beforehand.

exercised between these elements.

  According to one embodiment of the invention

  the tubular winding mandrel can be connected

  to an air compressor via an air duct of the

  winding. In this case, it is a stationary air supply and the subsequent units connected to the pressure generator are mounted, by means of a pin, in the rotating winding shaft.

  on the latter, which passes through a tubular extension

  laii.e for parvelnil in the conduct of aiv this ar-

winding.

  Next is the characteristic characteristic of the in-

  In this case, strips (which are distributed on the circumferential surface of the winding mandrel) are inserted into this surface, these wear strips emerging slightly from the winding mandrel and intended to prevent the destruction or destruction of the winding mandrel. deterioration of the surface (the mandrel, the interposed discs installed between adjacent support bodies, if not these steel discs may and s sink into the peripheral surface .in addition, according I 1'vention, the winding mandrel has a recess extending from the front face over the entire length of the winding mandrel, this characteristic has the advantage of being able to let all the narrow rolls of rolls together with the winding mandrel

  after the calf first, using a crane with

  so, for example, a CI'ocheót in C, the latter can come 's'angling in' évidtment supra. In a market-friendly cabinet, the support rings in

  the subject matter still remains in the different

  Where the cells may have been withdrawn, they may be restrained by these decrees. In addition, according to the invention, in a form of Id.'il isat i t (oliras I la I Ie the winding mandrel

  OlllpOl'te a U: vid ('meJiLt, a partition subdivides ltint

  In the case of the tubular winding, the walls of the above-mentioned structure assembled to this partition surround one half of the winding mandrel and the partition comprises through holes.

  in the parts delimited on both sides of the recess

  deny. On one hand, the partitions introduced into the man-

  and bobiiage ensure a return on the structure

  ture. On the other hand, where the boundary poles are located in the half of the winding Lmanldrin, the recess is located, the air being drawn to the other half of the winding mandrel and being distributed through the coils.

  passage holes can not escape through the pre-

  city. An exemplary embodiment of a winding device according to the invention is illustrated in the

attached drawings in which:

  FIG. 1 is a side view of ensenble and partially in section of the winding device, and FIG. 2 is a section taken according to FIG.

line I-I of FIG.

  The winding device designated as a whole by the reference numeral 1 in FIG. 1 consists of the upright 2 assembled firmly to a base plate 3. The winding shaft 4 is mounted in

  roller bearings 5 of the upright 2. The bobbin shaft

  4 is driven by a DC motor (not shown in more detail) connected by means of a clutch 6 to runi shaft 7 which is also mounted in rolling bearings 8 of the upright 2 and whose extension located on the side of the control, further comprises a right wheel 11. Via the chains 12 shown schematically, the right wheel 11 is connected to another right wheel 13 mounted on the pin 4a of the shaft coie 4 and transmitting

  the power of the latter to the latter, while at the same time

  holding a report determines multiplication or

(lemlulti p! ication.

  At the far end of the control side, the winding shaft 4 supports a winding mandrel

  14 which is fitted on a flange 16 by means of the assemblies

  15. The winding mandrel 14 can be

  replaced by others having different diameters.

  The winding mandrel 14 is tubular in shape and, in its circumferential surface 14a, are distributed and introduced elastic linings 17, as well as wear strips 18 (FIG. 2). These wear strips 18 and these elastic linings 17 are fixed in the

  peripheral surface 14a by means of screws 21 and 22

  respectively (Figure 1). The elastic linings 17 are provided with friction linings 23 emerging from the windows 24 formed in the peripheral surface 14a. According to Figure 2, the inside of the mandrel

  winding 14 is divided into two parts by a partition

  its 25 located preferably in the center, a recess 26 being machined in one of these parts from the face

  front of the winding mandrel 14 and over the entire length of

  the latter. This recess 26 is surrounded by delimiting walls 27 which are welded to the central partition 25. As a result, compressed air is conveyed

  to the winding mandrel 14 can not escape by

  26, this compressed air coming from a compressor (not shown in more detail) via the subsequent units generally designated by the reference numeral 28, for example a manually operated valve, a

  pressure reducing valve and a pres-

  and an air filter and a silencer, passing through the air duct 31 of the mandrel 14 and the air duct 32 formed in the flange 16, to then reach the half of the mandrel which is free of pressure. and recess that air is distributed uniformly throughout the winding mandrel 14 through the holes 33 in the partition 25. The pressure units 28 assembled in a compact assembly are mounted in a bore of the winding mandrel 14 by means of a pin 34 going, via a tube 36, to the interior of the air duct 31 and this, of such

  whereby the winding mandrel 14 rotates on this

rillon 34.

  During the operation of the booster device

  hoeing 1, before starting the winding process, the winding mandrel 14 is equipped with support bodies

  which are realized, of prefetence, in the form of

  buckets of synthetic material. These support bodies 35 are put in place individually by first sliding a first support body 35 against a

  stop 39. Next, the divided sheet is

  fired at this support body 35 in a slot made in

  the latter and bring a spacer disc 37

  than against this support body. The bobbin mandrel

  Swimming 14 then performs a revolution so that the split strip forms a first layer. Then, the other support bodies are installed in the same way taking into account each division program, a spacer disc 37 being each time between adjacent support bodies 35. Finally, it is slid on

  the winding mandrel 14, a locking ring -38 ensures

  axially casting the support bodies.

  So, we can start the process of winding clean-

  in other words, the DC motor rotating the winding mandrel at a constant speed v via the

  transmission system. At the same time, air

  awarded, is routed via lines 31, 32 to the

  the winding mandrel from a power supply network.

  compressed air to which the units 28 are connected.

  strung. In this way, the elastic linings 17 are loaded and the friction leaflets 23 supported by these linings are pressed against the support bodies 35 passing through the windows 24 formed in the peripheral surface 14a of the winding mandrel, the rings of these body supports being

  entralnés by the rotating winding mandrel 14.

  As soon as the traction exerted on a divided strip becomes too great, the adhesion between the winding mandrel 14 and the one or more support bodies concerned ceases and the one or more strips move relative to the mandrel and this, until that the pulls exerted on the strips become equal again and that one again gets a uniform winding. RLtINDICA'l IONS

  1. Chuck of bobinaÄge for winding together

  Several widths of VisCS of narrow cubicles on support bodies mount so as to be able to turn on the nlandrin and can be solicited by elements of

  friction, characterized in that it is a bobbin mandrel

  a tubular swim (14) connectable to a source of a pressure medium (28) while, at its periphery, are distributed further; and resilient pads (17) extending the full length of the winding mandrel

  (14) and can be introduced into the peripheral surface

  14 (14a) of the mandrel (14), the latter also having windows (24) which are machined in the zones of the elastic linings (17) in the circumferential surface.

  (14a) of the winding mandrel (14) and which allows

  the output of the friction liners (23) which are adapted to the elastic linings (17) and which can

  be applied against the support bodies (35).

  2. Winding mandrel according to Claim 2 (1), characterized in that the tubular winding mandrel (14) can be connected to the source of the pressure medium (28) via an air line (31) of the spindle winding (4) 3. Winding chuck according to any one of

  claims 1 and 2, characterized in that

  wear strips (18) distributed over the circumferential surface (14a) of the winding mandrel (14) are inserted into

e-head surface.

  4. Winding mandrel according to any one

  3 <) of claims 1 to 3, characterized in that the man-

  bobbin winding (14) carries a recess (26) extending

  from the front on all

  lasi i.guge of winding mandrii.in.

  5. Chuck of the winding according to the claim

  4, characterized in that, in that the partition (25) divides the inside of the winding of the tubular winding (14), delimitation walls (27) are connected to said partition (25), 24) in one half of the bobbin winding and the hole (25) has passage holes (33) in the defined portions of the windings.

  two sides (the evi.ldement (26).