FR2479789A1 - DRYER-DRINK, IN PARTICULAR FOR THE INDUSTRIAL TREATMENT OF LONG FLAT TEXTILE PIECES - Google Patents

Abstract

DRYER-IRONER, ESPECIALLY FOR THE INDUSTRIAL TREATMENT OF LONG FLAT TEXTILE PIECES. IN ADDITION TO A CONVENTIONAL DRYING-IRONING SYSTEM 5, 6, 7, THIS DRYER-IRONER 1 INCLUDES AT LEAST ONE BUILT-IN FOLDING DEVICE CONSISTS OF: A 28 FOLDING BLADE, OSCILLATING BACK AND BACK ON A 26 MU SUPPORT BY AN ELECTRIC CYLINDER 25, UNDER AND ON EACH OTHER OF THE APLOMB OF THE TEXTILE PIECE 9 DURING BY GRAVITY ON ITS EXIT FROM THE DRYING-IRONING SYSTEM, FROM AN INFRARED CELL 20 TRANSMITTER-RECEIVER THAT DETECTS THE START AND THE END OF THIS TEXTILE PART 9, OF AN ELECTRONIC TRANSMITTER-COUNTER DEVICE FOR "TOPS", TRIGGERED BY THIS CELL 20, AND OF A SYSTEM 13, 17,18, 21 FOR GRIPPING AND EVACUATION OF THE TEXTILE PART 9 , FOLDED. THANKS TO ITS INCORPORATED FOLDING DEVICE, THIS DRYER-IRONER FINDS AN INTERESTING APPLICATION FOR DRYING-IRONING AND FOLDING SHEETS IN INDUSTRIAL LAUNDRY.

Description

The present invention relates to a dryer-ironer, particularly

  for the industrial processing of long flat textile parts.

  Modern drying and ironing machines for drying and ironing textile articles (linen, sheets, fabrics, synthetic materials in webs or otherwise, woven or not) are known to include

  a cylinder on which the textile piece is stretched, dried and ironed.

  Some have a heated bowl and a non-heated cylinder.

  ghost. Others, of lesser size, do not have a heated bowl.

  and have a heating cylinder. Depending on the type of machine, this heating cylinder is fixed or rotating. In these machines, the entrance and exit of the textile piece are from the front, which facilitates handling, and the cylinder is heated internally by a heat source, fed with gas, steam, electricity or by any other appropriate fluid or means. The textile piece is introduced from above, applied against the heated cylinder, and driven by an endless belt or contiguous strips or spaced, endless, spread over the entire width of the cylinder. This belt or strips are guided and / or driven by satellite cylinders and the textile piece, once dried and ironed, leaves the bottom, towards the front of the machine and

  is collected in bulk in a front receiving tray.

  Extracts from this bin, textile pieces exceeding certain dimensions

  such as sheets, must then be folded, which, in

  trially, is carried out by passing said textile pieces in a

  folder or a folding device, or else, by hand, by hand.

  In both cases, the necessary handling of the textile

  laughs the cost of the operation. In the first case, the increase in

  This is achieved at the cost of an additional investment in machinery

  which also strike the cost of exploitation.

  Thanks to its incorporated folding device, the dryer-ironer

  according to the invention eliminates this handling and the use of manual folding.

  or the use of an auxiliary folder and reduces the

  the cost of exploitation, particularly in the industrial laundry of the

  This dryer-ironer is particularly suitable for

  (drying, ironing and folding) sheets.

  Conventionally, this dryer-ironer has a

  drying-ironing system, in particular with a heating cylinder, in the

  what is introduced and progresses the textile piece, including a sheet, and

  at the exit of which this piece hangs by gravity.

  It is characterized in that it further comprises an incorporated folding device consisting on the one hand by a transverse folding blade, mounted oscillating and reciprocating under the outlet of said drying-ironing system and two transverse stops limiting the angular frustum of said blade, each on either side of the plumb with the portion of the textile piece during gravity, on the other hand by

  a gripping system of the textile part, previously folded with

  val on this folding blade, and evacuation of this piece folded

  to a receiving organ; means being provided for automatically tilting

  the folding blade, in one direction and then in the other, as soon as the textile piece has unwound by a defined length corresponding to the formation of a fold on one side or the other of said blade. folding, and to trigger and stop this tilting of the blade, respectively at the beginning and at the end of the folding process of the textile piece, as well as to activate said gripping and evacuation system

of this folded textile piece.

  The folding blade is fixed on a transverse support which pivots

  on an axis arranged transversely in the lower part of the

  ironing machine and which, driving the blade in its movement, is moved back and forth and tilted between its two extreme positions by a jack

  double effect, preferably an electric cylinder.

  The gripping and evacuation system of the folded textile piece

  advantageously consists on the one hand by a rolling track

  Means a frame around which are stretched endless drive belts moved in translation around said frame by a drive cylinder, and secondly by a pressure roller, or pressure rollers, coming from

  supported on this drive cylinder by simple gravity or under the ef-

  fet of return means, the assembly being arranged in such a way that, tilted in its extreme forward position, said folding blade,

  by its upper edge, bear against the driving cylinder

  substantially along the line of tangency of that cylinder and

roller or pressure rollers.

  The two transverse stops limiting the angular fringe of the blade

  bending between its two extreme positions are advantageously

  killed, one by a rear support bar, the other, at the front, by said driving cylinder of the gripping and evacuation system of the folded textile piece, this driving cylinder being maintained at stop the

  during the process of folding this textile piece.

  The means provided for automatically switching the folding blade, triggering and stopping said tilting and actuating the gripping and evacuation system of the folded textile piece are constituted firstly by a detector for detecting the beginning and the end of said textile piece at its exit from the drying-ironing system, on the other hand by an electronic device generator-counter "tops", adjustable in

  depending on the desired bending length 'L', and controlled by said detecting

tor.

  This detector is advantageously constituted by at least one cell

  the infrared transmitter-receiver arranged in the median plane of the se-

  ironing machine and oriented in this plane so that its axis of emission

  infrared reflection-reflection reaches the textile part sen-

  at the level where it is supported, back and forth, by the

  upper edge of the folding blade.

  Advantageously is added to the generator-counter device "tops", a microprocessor system allowing, especially by action on the emission frequency of these "tops", to obtain, for textile parts of any length, a length of bending "L" constant whatever the scroll speed of this textile piece in the

drying-ironing system.

  The invention will be better understood and other features and advantages thereof will become more apparent with reference to the

  following description and the attached drawing which relate to a form

  preferred embodiment of the dryer-ironer which is the subject, hereinafter

  as a non-limiting example.

  In the drawing: - Figure 1 shows, seen from the front, this dryer-ironer, - Figure 2 shows it, seen from the side along line II of Figure 1, - Figures 3 to 8 show, each in section -Right along the line AA of Figure 1, this dryer-ironer in six successive phases of its operation, and,

  FIG. 9, an enlarged portion of FIG. 8, for a better

  their understanding of the last phase of this operation. Referring firstly to Figures 1 to 8 and according to this preferred embodiment of the invention, the dryer-ironer 1 comprises first, in a manner known per se, disposed between its side flanges 2 and 2 ' and being accessible from its front part, inside its

  envelope 3, 4, a conventional drying-ironing system, in the

  heat cylinder 5, provided with an endless belt or contiguous bands, or spaced, endless, 6, spread over the entire width of

  this heating cylinder 5. This belt or strips 6 are guided and / or

  trailed by satellite cylinders 7, while a training cylinder

  8, with endless belts stretched by a tensioner 14, supports and applies against the heating cylinder 5 the textile piece to be dried and ironed 9, presented, at its exit from an engagement tray 12, by and on a raceway It consists of a frame around which are stretched endless drive belts 15 matured in translation around said frame by a drive cylinder 16. Thus introduced between the heating cylinder 5 and the belt or strips 6, textile piece 9 progresses

  in the direction of the arrows shown therein in Figures 3 to 6 and,

  ironed and ironed, hangs by gravity as it exits the drying and

  passage (Figure 3). A knife 10 prevents the gluing of the piece texti

  9 on the heating cylinder 5 at its exit from the drying-meal system

  wise and, also knownly, a fan 24 ensures the evacuation

  humidified air out of the casing 3, 4.

  It has already been made clear that the invention is obviously not limited to

  do not use ironing machines with the drying-drying system.

  passage previously described as a non-limiting example, but extends

  all those with other types of drying systems.

  ge-ironing, provided that at the exit of such a system, the piece tex-

  dried and ironed tile hangs by gravity. In the example considered, the textile piece 9 considered is a sheet, that is to say a textile piece

  long and flat, to the treatment of which the dryer-ironer according to the in-

  vention, thanks to the built-in folding device of which it is provided,

  is more particularly adapted.

  This folding device will now be described. It is constituted

  killed on the one hand by a transverse folding blade 28 fixed to a sup-

  transverse port 26 which pivots on an axis 27 arranged transversely in the lower part of the dryer-ironer I and which, driving this blade 28 in its movement, is moved back and forth and tilted between two extreme positions by a cylinder to double effect, in this case and

  advantageously, an electric jack 25, as well as by two transverse stops

  versales limiting the angular fretting of the folding blade 28, thus mounted

  oscillating and moving back and forth under the exit of the drying system-

  ironing, each side of the plumb of the part of rabe-

  this textile 9 pendant by gravity. Said device is constituted on the other hand by a system for gripping and evacuating textile fabric 9, previously folded astride the folding blade 28 as explained later, consisting on the one hand of a formed raceway 13 a frame around which are stretched endless drive belts 18 moved in translation around said frame by a drive cylinder 17, and secondly by a pressure roller, or pressure rollers, 21, arranged (s) ) transversely, free (s) in rotation, at the end of a support 19 pivoting about a transverse axis 30 located under the engagement tray 12, and bearing on the drive cylinder 17 by simple gravity or under the effect of recall means. This device is arranged such that, tilted in its extreme position

  before, the folding blade 28 comes, by its upper edge, sensitive-

  according to the line of tangency of cylinder 17 and of this roll or

lets pressers 21.

  The two transverse abutments referred to above are constituted, one by a transverse rear support bar 23, the other, at the front, by said drive cylinder 17, which is kept stationary during the

folding process.

  Means are provided for automatically tilting the folding blade 28, triggering and stopping the lowering and actuating the gripping and evacuation system of the folded textile piece 9. They include on the one hand a detector to detect the beginning and

  the end of the textile piece 9 at its exit from the drying-ironing system.

  This detector consists of at least one infrared emitting cell

  this receiver 20 arranged in the median plane of the dryer-ironer

  1 and oriented in this plane so that its axis 22 emission-refle-

  The infrared radiation reaches the textile fabric 9 substantially at the level where it is supported, as explained later, in

  back and forth through the upper edge of the folding blade 28.

  infrared radiation emitted by the cell 20 along its axis 22 is partially

  reflected by the surface of the textile piece 9 along the same axis

  22 and received in return by the cell, also receiving, 20. The

  Infrared radiation has been chosen in preference to other

  because the textile part 9 is also still hot when it leaves the system.

  drying-ironing system because of its passage on the heating cylinder.

  gh, the reliability of the detection of its presence by this means

finds increased.

  Said means also comprise, not shown, a provision

  electronic system generator-counter "tops" or square signals, re-

  depending on the desired "L" fold length (FIG. 5), and

controlled by said detector.

  Advantageously, this "tops" generator-counter device is equipped with a microprocessor system which makes it possible, especially by acting on the emission frequency of these "tops", to obtain, for textile parts of any length, a length of folding "L" constant regardless of the speed of scrolling of this textile piece 9 in the

drying-ironing system.

  Finally, a receiving tray 29 is arranged at the front, under

  of the raceway 13, to allow the reception of the part

  textile dried, ironed and. folded.

  The operation of the folding device incorporated, with reference to its successive phases shown in FIGS. 3 to 9, is as follows: Starting from FIG. 3, the beginning of the textile piece 9 having

  when it leaves the drying-ironing system, the last cylinder

  7, hangs by gravity and intersects the axis 22 of the cell

  frarouge 20, is detected by the latter which triggers the counting

  "tops" by said electronic device. The folding blade 28 resists

  applied in abutment against the drive cylinder 17 maintained at

2479? 89

  stopping, the textile piece 9, driven by the belt or strips 6, descends vertically rearward (that is to say on the left in FIG. 3) of the blade 28 and its support 26. fall of the textile piece 9

  having reached the length "L" of folding (distance between two folds suc-

  (see Figure 5), the electronic device has counted the number of "tops" (for example ten "tops") corresponding to this length "L 'for which it is previously set and then controls the action of the

  electric cylinder 25 which tilts backwards (to the left at the end of the

  4) the folding blade 28 which grips the textile part 9 against the bar

  back support and then allows the textile piece 9 to unwind

  now at the front of this blade 28 and its support 26 a long-

  "2L" allowing the formation of a fold with two sides, which corresponds to

  weight, for the electronic device counting twice as many "tops" as before (in this case twenty "tops") if the device is programmed to constant frequency of the "tops" (or the same number

  of "tops" if, on the contrary, it is programmed accordingly at frequent intervals.

  riable). This count of "tops" causes, after the unwinding of this length

  2L "of the textile part 9 (FIG. 5), a new actuation, in the opposite direction, of the electric jack 25 which then tilts forwards (to the right in FIG. 6) the folding blade 28, which clip then

  the already folded part of the textile piece against the driving cylinder

  17, which then allows the textile piece 9 to unwind now at the rear of this blade 28 and its support 26, again of a length "2L" allowing the formation of a new fold with two faces, under the same counting conditions of "tops" as for the formation of the previous two-sided fold. This new count causes, after unwinding of this length "2L" of the textile part 9 (Figure 6), a new actuation of the electric cylinder 25 which then tilts back (Figure 7) the folding blade 28 pinching the already folded part of the textile piece 9 against the rear support bar 23, which allows the rest of the textile piece 9 to unwind and fall towards

  the front of this folding blade 28 to form the last part of the length

  "L". The formation of this last pan, by falling the remainder of

  this textile 9, does not require counting by the electronic device

  than. This fall allows the infrared cell 20 to detect the end of the textile piece. This detection simultaneously causes the rotation of the driving cylinder 17 and the translation of the endless belts 18, as well as the actuation of the electric jack 25 which then tilts forwards (to the right in FIG. folding blade 28 which then supports the entire textile part 9, folded, and applies against the drive cylinder 17 in rotation in the direction of the arrow 34 (Figure 9). This has the effect of snapping up the folded textile piece

  9, in friction between this drive cylinder 17, its associated belts -

  18 and the roller or the pressure rollers 21 rotating in the direction of the arrow 33, and to evacuate, in the direction of the arrow 32, on and by the raceway 13 at the exit of which it falls, according to the

  arrow 31 (FIG. 8), in the receiving tray 29.

  In the example considered, it is a textile piece (cloth) of

  "61" which has been dried, ironed and folded. The program (setting)

  of the electronic device being determined by that length and the name

  desired number of plies, that is to say also by the length "L" of each

  in between successive folds, as well as by the way in which

  start and finish folding (first and last half length "L" as the intermediate pieces, as in the example described, or one and / or

  the other of length less than "L"), the

  electronic tif (number and frequency of "tops" for each of the sequen-

  these sequences, many of these sequences, etc.) for each particular case

  ticular. However, it is possible to partially overcome this servitude by adding to the electronic device generator-counter "tops", a servo system microprocessor allowing,

  in particular by acting on the frequency of emission of these "tops" ',

  nier, for a given folding mode, a folding length "L" cons-

  aunt whatever the length of the textile piece to be folded and the

  scroll speed (variable speed) of this piece

  textile 9 in the ironing drying system.

  Note that the time saved with the dryer-ironer

  according to the invention in particularbecause the drying operations

  ge-ironing and folding of the same textile part are not

  killed separately and successively, one after the other, as is the case in the prior art, but they are concomitant and only out of phase with time, the already dried and ironed part of the piece

  textile being, when it leaves the drying-ironing system, folded in

  as long as the next part is dried and ironed.

  Finally, the preferred embodiment of the dryer-ironer according to the invention which has just been described and is shown in the drawing has been cited as a non-limiting example, those skilled in the art

  may make to this embodiment any modifications of

  detail or replace all or part of the constituent elements

  by equivalents, without departing from the scope of the invention.

Claims (7)

  1. Dryer-ironer, especially for industrial processing   long flat textile pieces, including a drying-meal system   wise, in particular with a heating cylinder, in which is introduced and   The textile piece, in particular a sheet, is produced at the exit from which the piece hangs by gravity, and is furthermore characterized by the fact that it comprises, in addition, an incorporated folding device constituted on the one hand by a transverse blade. bending, oscillating rise and -mie back and forth under   the outlet of said drying-ironing system, and two transverse stop   limiting them the angular fretting of said blade, each on either side   the plumb of the part of the textile piece during gravity, from   firstly by a gripping system of the textile part, previously folded astride this folding blade, and evacuation of this folded textile piece to a receiving member; means being provided for   automatically switch the folding blade in one direction and then in the   as soon as the textile piece has unwound by a length defined   responding to the formation of a fold on one side or the other of the said   me, and to trigger and stop this tilting of the blade, respectively at the beginning and at the end of the folding process of the textile piece, as well as to activate said gripping system and   evacuation of this folded textile piece.   2. Dryer-ironer according to claim 1, because ac terer   characterized in that the folding blade (28) is fixed on a transverse support (26) which pivots on an axle (27) arranged transversely in the lower part of the dryer-ironer (1) and which, driving the blade ( 28) in its movement, is moved back and forth and tilted between its two extreme positions by a double-acting cylinder, preferably a electric cylinder (25).   3. Dryer-ironer according to claim 1, characterized by   the fact that the system for gripping and evacuating the   this folded textile is formed on the one hand by a raceway (13) formed of a frame around which stretching strips are stretched (18)   endlessly translating around said frame by a drive cylinder   (17), and secondly by a pressure roller, or rollers   sisters (21), resting on this drive cylinder (17) by sim-   full gravity or under the effect of biasing means, the assembly being arranged 1J so that, tilted in its extreme forward position, the blade   fold (28) comes, by its upper edge, substantially according to the   tangency of this cylinder (17) and said roller or rollers (21).   4. Dryer-ironer according to the claims] and 3, c a r a c-   characterized in that the two transverse stops limiting the angular clearance of the folding blade (28) between its two extreme positions are constituted, one by a rear support bar (23), the other, to at the front, by said driving cylinder (] 7) of the gripping and evacuation system of the folded textile part (9), this driving cylinder (17) being kept stationary during the folding process of this textile piece (9).   5. Dryer-ironer according to claim 1, c a r a t i -   characterized in that the means provided for automatically switching the folding blade (28), triggering and stopping said tilting and actuating the gripping and evacuation system of the textile piece (9).   folded, consist on the one hand by a detector for detecting   the beginning and the end of the said textile piece (9) when it leaves the system.   drying-ironing, on the other hand by a general electronic device   counter-tops counter, adjustable according to the fold length   ge "L" desired, and controlled by said detector.   6. Dryer-ironer according to claims I and 5, c a r a c-   characterized in that said detector is constituted by at least one infrared transmitting-receiving cell (20) disposed in the medical plane of the dryer-ironer (1) and oriented in this plane so that its axis (22) emission-reflection infrared rayonnemnet reaches the room   textile industry (9) at a level where it is supported, in   comes from the upper edge of the folding blade (28).   7. Dryer-ironer according to claim 1, c a r a c t r i -   s e e by the fact that is added to the device generator-counter of "tops"   a microprocessor system allowing, in particular by action on the   quence of emission of these "topsT", to obtain, for textile parts of any length, a constant bending length 'L' regardless of the speed of travel of this textile part (9) in the system of Drying-ironing.