FR2710825A1 - Circular brush with rotary drive for cleaning preferably filled cylinders. - Google Patents

Abstract

Circular brush with rotary drive for cleaning, in the textile industry, preferably filled cylinders, consisting of a base body rotatable symmetrically in both directions provided, at its periphery, with radial guides for the bristles and comprising, at the two front ends, side discs connected to each other, of bristle holders which are designed as brushes, which are arranged apart apart along the generatrices of the envelope of the circular brush, which are housed inside radial pile guides so as to slide along the base body and which are brought into position by at least two wedge-shaped positioning members and this, by radial adjustment, characterized in that the wedge-shaped positioning members (21, 22) for the brushes (3) have inclined surfaces (212, 222) in the form of a wedge acting inwards and the brushes (3) are associated with load elements (25) acting radially v to the outside.

Description

i The invention relates to a circular brush with drive

  rotary for cleaning in the textile industry of cylin-

  dres preferably filled, consisting of a basic body

  rotated symmetrically in both directions provided, at its peri

  spherical, radial guides for the bristles and comprising, at the two front ends, side discs interconnected and bristle holders which are designed as brushes, which are

  arranged apart at a distance along the generators of the

  Velcro of the circular brush, which are housed inside radial bristle guides so as to slide along the base body and which are brought into position by at least

  two wedge-shaped positioning members, and this by adjusting

radially radial.

  A circular brush of this type is known from DE-PS-

645,736.

  The tufts of hair pass through what is called an external cylinder comprising in its envelope a corresponding number of holes, and are fixed to what is called brushes

of an internal cylinder.

  The brushes are arranged to slide radially and are moved in the radial direction by keys sliding axially which bear against the

neighboring brooms.

  A circular brush thus formed has the advantage that

  the hairs again benefit from a guide and, this, relative-

  close to their tips and the bristles can be adjusted a posteriori along their own axis relative to the diameter

cylinder set point.

  The disadvantage of this embodiment lies in the fact that the maximum adjustment path for adjusting the

hair length is limited.

  The brushes must, although not expressly indicated here, be held against the keys by means of

  elastic means, for example springs.

  This has the consequence that in the presence of rotational speeds

  tion of the circular brushes, the brooms are lifted from the keys due to centrifugal force and are pressed with their bristles, at an indeterminable moment

  exactly, against the surface to be brushed.

  With regard to all the forces in action, the tips of the bristles must be bent in the opposite direction to that of the movement and slide in a partial angle

  very sharp on the surface to be brushed.

  On the one hand, the effectiveness of brushing is reduced, on the other hand, the friction between the tips of the bristles and the surface to

  brushing is greatly increased. Hair wear increases.

  DE-OS 38 02 933 discloses a similar device for the finishing treatment of surfaces having undergone honing. This device differs from that described above by

  the fact that the keys sliding axially respective-

  the regulating members do not move between the ba-

  next to each other but along the axis of the rotating brush. Several inclined surfaces are provided for uniform radial adjustment of the brushes. Because positioning members, such as those previously known,

  move the brushes outward against the for-

  this of a load spring, there also remains here the incon-

  happens that in the presence of high speeds of rotation of

  brushes, the brushes are pushed outwards against the

  tion of the spring and the bristles are wound back against the surface to be treated. The effectiveness of cleaning is reduced. Such curvature of the hairs can certainly be used for

  finishing polishing of surfaces having undergone honing.

  However, it is entirely unsuitable for cleaning

  age in the textile industry of cylinders especially

lined cylinders.

  This is the elimination of dust and short fibers o the action of sticky substances (for example the

  wax or honey) is not to be excluded.

  The hairs tilted backwards press the dust and

  short fibers against the cylinder to be cleaned. These last-

  niers adhere to the surface under the action of col-

  lantes. A layer is quickly formed which affects the efficiency

  cited of the filled cylinders or even puts them completely

out of order.

  For the reasons mentioned, brushes provided with radially adjustable brushes as described in the

aforementioned literature.

  In the textile industry, it is therefore generally common on circular brushes of this type to removably fix interchangeable bristle holders on a

basic body.

  The bristle holders are designed for this purpose as half

shells.

  They have a large number of holes for receiving

  tufts of hair in the form of a loop. The tufts of hair are fixed in the holes either by means of keys

  either using metal wires.

  Normal bristle wear is compensated for by the fact that the circular brush is repositioned against and in relation to the surface to be cleaned. This operation is

  executed manually at more or less regular intervals.

  The extent of repositioning is either based on values resulting from experience or is determined by a

  visual inspection of the surface of the cylinder to be cleaned.

  If the bristles are worn, the half-shells are exchanged for new half-shells respectively regenerated and

  the circular brush is again positioned.

  This described embodiment has drawbacks

points of view.

  First of all, it takes a lot of time and effort to garnish the half-shells with tufts of hair. To do this, the work is done as before for a large part, manually. This concerns both the removal of tufts of worn bristles and the placement of new bristles.

  Another disadvantage is that the half

  newly installed shells have hairs extending very far forward and therefore have only

insufficient cleaning.

  As the working performance increases, the bristles are subjected, alongside normal friction for cleaning, to a

  even greater additional heating.

  This heating decreases the resistance of the hairs which

  further reduces the regeneration cycle.

  In order to rationalize the various repositioning operations of the circular brush with respect to the filled cylinders, an attempt has recently been made to reposition the circular brush as a whole with respect to the surface.

  to be cleaned using motorized positioning means.

  For this, the fixing in position of the circular brush was released by means of a magnetic control, the circular brush was moved using a motor serving as positioning means and the lock was again locked.

  fixing in position of the circular brush.

  It is thus possible to avoid manual positioning

expensive and repetitive.

  The problem of the different effectiveness of cleaning short hairs and long hairs and the tedious and expensive installation of hairs in the holders is not, however

still not resolved.

  The object of the invention is to create a circular brush which can be used particularly in the textile industry and to guarantee, by using the radial adjustment of the brushes, the

  brushing technique required in the textile industry.

  In connection with the solution to achieve this goal, it is also a question of creating a bristle holder which can be produced automatically and which can be placed against the circular brush so that the bristles can be positioned constantly with the same elasticity and at equal distance from the

surface to be cleaned.

  The attachment of the bristle holders to the circular brush must be designed so that the regeneration of the circular brush the bristle holders are easily and economically interchangeable.

  This goal is achieved by the fact that the positioning organs

  wedge-shaped for the brushes have wedge-shaped inclined surfaces acting inwards and the brushes are associated with load elements acting

radially outward.

  Reversing the direction of action of the wedge-shaped surface

  positioning means, relative to the positioning means

  the bristles of the brushes involved in the pro-

  cessation of treatment, has the consequence that the hairs are adjusted so as not to rub strongly, with their

tips, the surface to be cleaned.

  They simply sweep away the dust and fiber particles that have collected. The formation of a layer is

  thus avoided. Hair wear is visibly reduced.

  Repositioning operations can be carried out at

  longer intervals of time.

  Safe radial guidance of the brush and precise simultaneous adjustment of the brush in the radial direction are obtained by

  the fact that the brushes are fitted at both ends of the sail-

  lees which pass through the radial guides and which act in common with the positioning means for the adjustment

radial brushes.

  A configuration of the radial guides and the positioning means

  tction, which makes the projections of the brushes associated

  ciées to positioning members provided with an internal cone

  in the area of the two side discs, at least one of which is

  adjustment is axially movable and the brushes are

  radially associated with load elements acting radially

  outwardly and this between the two organs of

  positioning, forms the basic condition for regeneration

  problem-free use of the circular brush.

  The characteristics according to which: - the adjustment members are connected to the base body rigidly in torsion and axially movable, - the two positioning members can be offset axially on a rotary adjustment tube by means of threads facing each other and - the drive of the adjustment tube is associated with a self-locking transmission member and - the drive of the adjustment tube is associated with an electrically controlled positioning means, define the conditions for an operating adjustment

safe and automatic brushes.

  Since the load elements of the brushes consist of at least one elastic and annular hollow body which can be connected to a source of compressed air by a valve, that

  the load elements for the brushes consist of several

  several annular flexible tubes arranged at a distance from each other, which are connected together by flexible tubes and at least one of which is associated with a valve, the

  load element configuration for guaranteed brushes

  tit, over the entire length of the brushes, stable positioning without oscillation of the bristles in front of the surface to be cleaned. The design of the bristle holders as brushes, which are guided in the basic body of the circular brush and which are adjustable, implies that, for a stable position of the axis of the circular brush, the bristles can be positioned always under the same conditions in front of the surface to be cleaned. The brushes can be changed by

  simple, fast and problem-free means.

  Due to the fact that at the periphery of the base body there are guide spacers which are positioned between the bristles of the brushes which are close to each other and which have a bearing at the level of the two lateral discs of the base body, it is also ensures that the lateral discs of the basic body are connected together in a sufficiently stable manner and that the bristles are constantly supported on the same

distance from the surface to be cleaned.

  The effectiveness of hair cleaning remains practically constant.

  aunt for the duration of the use of a broom.

  The characteristic which foresees that the guide spacers are fixed, in a non-removable manner, to the lateral disc directly connected to the drive and, in a removable manner, to

  the other side disc, allows the simple exchange of the brushes.

  By providing that the guide spacers have a profile

  semicircular whose roundness is directed towards the internal face

  the circular brush, the insertion of the brushes becomes possible while ensuring a high stability of the base body. Bristle support at a minimum distance from the

surface to be cleaned is possible.

  The use of hollow profiles as a support for rods

  because the brushes consist of a hollow profile open on one side only, into which the bristles are introduced perpendicular to the longitudinal axis of the brush, so as to surround a metal wire and which are fixedly held in position by a deformation of the hollow profile, allows the manufacture of brushes from a material without

end in an automatic process.

  Various other features of the invention emerge

  moreover from the detailed description which follows.

  Embodiments of the subject of the invention are shown, by way of nonlimiting examples, in the accompanying drawings. Fig. 1 shows a circular brush according to the invention

in a longitudinal section.

  Fig. 2 shows a section of the circular brush in section

  transverse in the brush area with worn bristles.

  Fig. 3 is a representation similar to FIG. 2 with

new brush insertion.

  Fig. 4 is a cross section through a first

variant of a broom.

  Fig. 5 is another variant of the cross-section broom

  versal. Fig. 6 shows the guidance and positioning means

  for brooms with their drive elements.

  In such a variant, it is necessary to show the circular brush as it is used on machines for

  comb the wool for cleaning the circular comb.

  The cleaning of the circular comb is carried out practically at each of its revolutions. The circular brush is housed parallel to the circular comb when the latter is in

working position.

  The distance from the axes of the circular comb and the circular brush

  ring is set once and for all and remains constant.

  The points of the needles pointing forward in the direction of movement require that the peripheral speed of the circular brush be greater than the circular speed of the comb

  circular if proper cleaning is to be obtained.

  The circular brush consists of a basic body 1 which

  carries two side discs 11, 12 and connecting elements

  between these side discs 11, 12.

  The guide spacers 13 act, in this case,

  connecting elements at the periphery of the circular brush

  laire. The guide spacers 13 are housed sta-

  ble and durable against the lateral disc 11 on the drive side.

  The spacers are inserted in corresponding recesses.

  and are welded, glued or otherwise.

  Against the opposite lateral disc 12, the guide spacers 13

  also come to engage in appropriate recesses.

  But at this point, they are housed in a removable manner.

  This function can be ensured for example by what is

called a tensioner 14.

  In the area of the side discs, there are the means of

positioning 2 for brushes 3.

  The positioning members 21, 22 of these positioning means

  tction 2 are each provided with an internal cone 212, 222, in which are embedded the radial guides 211, 221 for

the projections 30 of the brushes 3.

  These positioning members 21, 22 have inside a thread whose inclination is opposite to the thread of

  the other positioning member 22, 21.

  The positioning members 21, 22 are connected in the direction

  of rotation to the base body 1 by means of

  rotations 15 and 16, while being axially movable

compared to the latter.

  A positioning tube 23, guiding the positioning members

  21, 22 inside, is provided at both ends

  tees, with a corresponding precision thread for organ-

  positioning nes 21, 22 to be distributed.

  During a rotational movement of the positioning tube 23, the positioning members 21, 22 are spaced apart

  of each other respectively with respect to each other.

  On the drive end of the positioning tube 23, there is a drive wheel 24 which is connected

  rigidly in torsion, to the positioning tube 23.

  A pinion 26, housed in the lateral disc 11, transmits a positioning movement coming from the outside to the wheel

  24 and therefore to the position tube-

23.

  As a means of driving said pinion 26, it is made

  recourse, in the present case, to a small motor 28 which presents

  te its bearing against the front wall of the side disc 11. This

  motor 28 receives its energy and / or its start-up orders

  che by means of friction contacts of a

central command.

  For the purpose of perfect fixing of the position once the positioning members 21, 22 have been adjusted, the gear between the motor 28 and the drive wheel 24 must be self-locking. In the present example, the motor 28 directly drives the worm of a worm gear

endless 27.

  In the radial guides 211, 221, positioners

  21, 22, the brushes 3, distributed at regular intervals with their projections 30, now operate on the

  periphery of the circular brushes.

  They are constantly maintained by the load elements 25

  against the guide surfaces of the internal cone 212, 222 of the orga-

positioning nes 21, 22.

  The load elements 25 preferably consist of a

  annular hollow body 251 made of rubber which can, through

  middle of a valve not shown, be subjected to compressed air. These annular hollow bodies 251, 251 ′ have the advantage that regardless of the degree of their wear and over their whole

  length (about 40 cm), the brushes 3 are pressed uniformly

against the surface to be cleaned.

  Instead of a single annular hollow body 251, more

  Several hollow bodies of this type can be used in the form of annular flexible tubes 252 of smaller width. Here, it should be considered that their mutual lateral spacing is selected so that these tubes

  ring hoses do not interfere with each other.

  The cavities of these flexible tubes 252 should be connected

  between them by flexible connecting pipes so that, in all flexible tubes, can be generated

identical pressure.

  The brushes 3 have the function of exactly positioning the bristles 34 and of fixing their position stably by

relative to the surface to be cleaned.

  The goals cited are achieved by the use of a hollow profile 31, 33 having substantially the shape of a U.

  The bristles 34 are introduced by forming loops by inserting

  tion of a metal wire 32 between the sides of the profile 31, 33 in U and, under the action of an external pressure, are tightened on the sides of the profile 31,33 in U. The position of the metal wire 32 to l 'interior of the section 31, 33 in U can be provided by moldings 311 regularly spaced. Fig. 4 shows an example where the U-shaped section 31 has a constant wall thickness. Such a configuration

  has the drawback, however, that, on the one hand, the capacity

  tee in the radial direction with respect to the circular brush is

  limited and that, on the other hand, a relative hair length

  large must be inserted into the U-shaped profile 31.

  The U-shaped profile 33 of FIG. 5 does not have this drawback

  deny. This U-shaped profile of the brush 3 is in itself more stable due to the larger cross section of material. The space for fixing the hair loops 34 is limited

to a minimum.

  In the following, it is necessary to emphasize again

  on the work of this circular brush.

  In the basic assembly of the circular brush, the brushes 3

  are mounted with normal bristles 34 of great length.

  The hollow bodies 251, 252 are reduced by removing the pressure to a lesser thickness. By manual adjustment of the positioning members 21, 22, the position of the bristle tips 34 is oriented so as to position them at a distance

  desired above the guide spacers 13.

  Then, the pressure in the hollow body 251, 252 is increased

  ted in small steps by means of a corresponding manual valve control so that the bristle tips 34 reach the surface to be cleaned and slide over it under

low voltage.

  In this phase, the operational availability of the

combing machine is established.

  The combing machine program may trigger reposition

  positioning of the bristles 34 by the motor 28, either as a function of predetermined time intervals, or by information

appropriate sensors.

  In a control of this type, electrical positioning means can be associated with the valve of the bodies

  hollow 251 and 252 which adjusts a suitable pressure accordingly

  quence as a function of a determined maximum diameter of the hollow bodies. In this way, the combing machine can continue to operate until the wear on the bristles 34 of the brushes 3

* has reached a predetermined minimum threshold.

  When the machine stops, the circular brush of the

  comb is removed and brought to a separate work station

  d for regeneration. The tensioner 14 is loose. The side disc 12 is removed. The pressure in the hollow body

  251, 252 is reduced. Part of the positioning device

  ment 22, which carries the internal cone 222, is removed with the

thread of the hub part.

  The brushes 3 can be removed axially and be replaced

  created by brooms with long bristles.

  The semi-circular profile of the guide spacers 13 here facilitates the insertion of the bristles 34 into the spaces between the

guide spacers 13.

  Once the brushes 3 have been exchanged, the positioning member

  tction 22 is reassembled, the side disc 12 and

the tensioner 14 are replaced.

  The operational availability is again established,

  as described in the above.

Claims (11)

CLAIMS:   1. Circular brush with rotary drive for cleaning   ge, in the textile industry, preferably filled cylinders, consisting of - a base body rotatable symmetrically in both directions provided, at its periphery, with radial guides for the bristles   and comprising, at the two front ends, side disks   interconnected rails, - bristle holders which are designed as brooms, which are   arranged apart at a distance along the generators of the   Velcro of the circular brush, which are housed inside radial bristle guides so as to slide along the base body and which are brought into position by at least   two wedge-shaped positioning members, and this by adjusting   radially radial, characterized in that - the wedge-shaped positioning members (21, 22) for the brushes (3) have inclined surfaces (212, 222) in the form of a wedge acting inwards and - the brushes (3) are associated with load elements (25)   acting radially outwards.   2. Circular brush according to claim 1, characterized in that the brushes (3) are provided at the two ends with projections (30) which pass through the radial guides (211, 221) and which act in common with the positioning means (2 )   for the radial adjustment of the brushes (3).   3. Circular brush according to claim 1 or 2, character- laughed at in that   - the projections (30) of the brushes (3) are associated with orga-   positioning pins (21, 22) provided with an internal cone (212, 222) in the area of the two lateral discs (11, 12) of which at least one adjustment member (21, 22) is axially movable and - the brushes (3) are associated radially with load elements (25) acting radially outwards and, this,   between the two positioning members (21, 22).   4. circular brush according to one of claims 1 to 3,   characterized in that - the adjusting members (21, 22) are connected to the base body (1) rigidly in torsion and axially movable, the two positioning members (21, 22) can be offset axially on a tube rotary adjustment (23) by means of threads (231, 232) facing each other and - the drive (26, 27, 28) of the adjustment tube (23) is   associated with a self-locking transmission member (27).   5. Circular brush according to one of claims 1 to 4,   characterized in that the drive (26, 27, 28) of the adjustment tube (23) is associated with a positioning means (28) electrically controlled.   6. Circular brush according to one of claims 1 to 5,   characterized in that the load elements (25) of the brushes   (3) consist of at least one elastic hollow body (251, 252)   that and annular which can be connected to a source of air awarded by a valve.   7. circular brush according to one of claims 1 to 6,   characterized in that the load elements (25) for the   brushes (3) consist of several flexible annular tubes   wheat (252) arranged at a distance from each other, which are interconnected by flexible tubes and of which at   minus one is associated with a valve.   8. Circular brush according to one of claims 1 to 7,   characterized in that at the periphery of the base body (1)   are arranged guide spacers (13) which are posi-   gripped between the bristles (34) of the brushes (3) which are close to each other and which have a bearing at the level of the two   side discs (11, 12) of the base body (1).   9. Circular brush according to claim 1 and 2, charac-   terized in that the guide spacers (13) are fixed, in a non-removable manner, to the lateral disc (11) connected directly to the center and, in a removable manner, to the other disc side (12).   10. Circular brush according to claim 1 to 9, character-   in that the guide spacers (13) have a semicircular profile, the rounding of which is directed towards the   inside of the circular brush.   11. Circular brush according to claim 1 to 10, charac-   characterized in that the brushes (3) consist of a hollow profile (31, 33) open on one side, in which are   introduced the bristles (34) perpendicular to the long axis   tudinal of the broom, so as to surround a metal wire (32) and which are fixedly held in position by a   deformation of the hollow profile (31, 33).