EP3192918A1 - Method and device for mangling laundry items - Google Patents

Abstract

In the case of braided belts (10), laundry items are moved along at least one circumferentially driven ironer belt (17) on a tread surface of a stationary ironer body. The mangle band (17) takes along the garments (11) to be lacking, whereby the garments (11) slide with slippage along a lateral surface (13) of the mangle roller (12). In known bracelets (10), it has proven to be problematic to replace the mangled piece of laundry (11) in the outlet region (22) from the mangle body. The invention provides for the laundry item at the outlet region (22) to be detached from the ironer body by a discharge aid (37) designed as a thin-walled, flexible strip of material. In this case, the material strip (37) in the outlet region (22) is fixed to the mangle body. As a result, a trouble-free detachment and deduction of lack of laundry items guaranteed by the mangle body.

Description

The invention relates to devices for the lack of laundry according to the preambles of claims 1 and 9. Furthermore, the invention relates to a method for the lack of laundry according to the preamble of claim 11.

The lack of laundry items of all kinds takes place both in commercial laundries and in the household with different devices. Mainly found in household areas and in commercial laundries so-called trough mangles with at least one rotationally drivable mangle roller and a semi-circular heatable mangle trough associated with this use. Also commonly referred to as ligament deficiencies devices are used, which have at least one mangle body and at least one of the mangle body associated circumferentially driven mangle band.

The invention relates to tapes. A problem with known ligament deficiencies is the heating of the laundry items coming into contact and a plateau forming lateral surface of the temple body. The problem with the known ligaments lack is also the derivation of the mangled garment from the outlet region of the mangle gap.

From the GB 2 073 272 A a ligament deficiency is known in which the outlet area is assigned a rejection aid. The discharge aid is designed in the manner of a scraper, which rests with a free front transverse edge on a cylindrical ironing body. At the transverse edge of the scraper resting against the mangle body, mangled items of laundry may get caught. The result is malfunctions of the trough deficiency.

The invention has for its object to provide a method and devices that allow the requirements of the expectant treatment of the laundry items and an economical and trouble-free lack.

An apparatus for solving the above-mentioned problem has the features of claim 1. In this device, it is provided to allocate at least one discharge aid for mangled laundry items to the outlet area of the or each mangle body and the associated mangle gap. The respective discharge aid is used to derive or separate the mangled items of laundry leaving the mangle gap from the mangle body and / or the mangle band. However, the respective discharge aid also serves to guide the mangled items of laundry reliably and, above all, wrinkle-free to a removal conveyor adjoining the outlet area or into the inlet area of a subsequent ironer body. A discharge aid is formed by a flexible material strip or a thin-walled strip of material, preferably a flexible sheet metal strip, which is fixed at the end of the mangle gap with a front transverse edge on the stationary, so not rotationally driven mangle body. As a result, in the outlet area, the respectively mangled laundry item can be reliably transported away from the outlet area under the influence of the material or sheet metal strip without wrinkles.

It can be assigned a discharge aid only one side or surface of the laundry items. Preferably, however, a discharge aid is assigned to both opposite sides or surfaces of the laundry items. Then the laundry items are guided on both sides by the discharge aids away from the outlet area and directed to a predetermined location to a subsequent conveyor.

It is preferably provided to associate at least one delivery aid with a side or surface, preferably underside, of the item of laundry which comes into contact with the ironer band. From or on this discharge means the laundry item can then be directed to a subsequent conveyor and / or to the subsequent conveyor be transferred. This discharge means can be designed in various ways. For example, the discharge means assigned to the underside of the laundry items may be a scraper or a guide plate for mechanically guiding the mangled items of laundry or may be formed by preferably a plurality of air nozzles for pneumatically guided discharge of the items of laundry from the outlet area. It is also conceivable that the depositing means associated with the underside of the items of laundry preferably form a plurality of juxtaposed brushes, in particular rotating brushes. The brushes, but also the other conceivable Ableithilfsmittel, serve mainly to replace in the outlet area of the ligament deficiency with their undersides on the mangle band adjacent mangled garments from the mangle band or separate before the garments passed from the discharge aids to the downstream conveyor and / or on the Be carried away here or led away.

According to an advantageous embodiment of the device, at least the surfaces of the material strip or the material web of the at least one discharge aid coming into contact with the items of laundry are provided with good sliding properties and / or non-adhesive, for example by a coating of polytetrafluoroethylene. As a result, the items of laundry can slide along the material web or material strip in contact with their surface without any great resistance when the laundry items entrained by the ironer tape are fed below and / or above the material web or material strip to the ironing gap or removed from the mangle gap , Although the material strip or the material web preferably not be moved.

Preferably, it is further provided to provide the laundry with the coming into contact outer surface, in particular the flattening surface, the at least one ironer body or the mangle roller with non-adhesive properties. The flattening surface of the mangle body or the mangle roller is preferably smooth, so that the flattening surface has the lowest possible coefficient of friction. Preferably, the outer surface of each mangle body or each mangle roll is provided with a wear-resistant non-stick coating, which is formed for example from good sliding properties having plastic such as polytetrafluoroethylene or a ceramic or chromium layer. In contrast, the or each mangle band is designed so that at least the coming into contact with the garment side of the same adhesive properties, for example, is rough or roughened and / or has adhesive properties on the surface. This ensures that the piece of laundry reliably carried along by the circumferentially driven ironer tape but can slide along the flattening surface of the mangle body or the mangle roller with little resistance.

Another device for solving the above-mentioned problem has the features of claim 9. This device can also be a preferred embodiment of the device described above. In the apparatus of claim 9, it is provided that at least two separate, in the longitudinal direction of the mangle gap successive cavities for heat carrier for heating the mangle body attributable to the mangle gap limiting lateral surface of at least one mangle body. Consequently, in an initial region of the mangle gap, the lateral surface of the at least one ironer body can be heated with a heat carrier flowing through this cavity with a certain energy density and at least one subsequent region of the mangle gap in another, separate cavity of the ironer body with a different heat carrier or a lower energy density heated heat carrier can be heated. The separate, successive in shortage direction cavities of the respective mangle body allow for selective heating of the mangle gap. This can be done with different heat transfer media, but also with the same heat transfer medium, which was already withdrawn in the previous cavity for heating its associated part of the lateral surface of the ironer body part of the energy. It is thus possible, with the greatest possible utilization of the energy in the heat transfer medium, preferably steam, to heat the platelet surface of the temple body which delimits the shortage gap individually.

Preferably, each cavity in the respective ironer body is provided with at least one feed connection for supplying the heat carrier and at least one discharge connection for discharging the heat carrier. In this case, the feed connections are assigned to an upper region of the respective mangle body and the discharge ports are assigned to a lower region of a respective mangle body. The assignment of the discharge ports in the lower region of the ironer body makes it possible to derive the steam used for heating together with Kodensat from the respective cavity in the ironer body.

Another embodiment of the device provides for a discharge connection of a cavity through which superheated steam or saturated steam flows to lead to a condensate separator and / or a decompression device and to the condensate separator or the expansion device a line for the supply of flash steam or vapor another cavity of the same defect body or to another subsequent defect body.

It is preferably provided that at least one cavity for live steam, in particular saturated steam or superheated steam, is assigned to a front part of the jacket surface of the ironer body, while at least one separate cavity for flash steam or exhaust steam originates from the rear part of the outlet area Jacket surface is assigned to the same lack body. Thus, the less energy-containing, already relaxed steam can be used specifically where the laundry is already largely dried and mangled, while a large part of the energy in the inlet area still wet uncooled laundry can be fed.

Alternatively, it is conceivable, in devices with several successive mangle bodies, in which each piece of laundry passes successively, with steam of higher energy density, especially live steam to completely heat the first mangle body and steam, which was a part of the energy withdrawn, after passing through a Kondensatabscheiders and / or a relaxation device to supply the following mangle body. As a result, the following ironer body is heated by the steam already used to heat the preceding ironer body.

A method for solving the above-mentioned problem comprises the measures of claim 11. This method is characterized in that the lateral surface of the at least one ironer body is heated with steam of different energy contents and / or different energy densities. As a result, it is not necessary to heat the entire lateral surface of each mangle body with steam of maximum energy density, for example saturated or superheated steam. It can be used as well as cooled or already relaxed steam for heating another part of the respective mangle body or another mangle body. By doing so, the energy of the steam can be used to the greatest extent possible for heating the respective ironer body.

It is preferably provided that a part of the lateral surface of at least one ironer body is heated with a steam having a greater energy content than at least the other part of the ironer body. It is thus possible to heat more intensely that part of the mangle body, which is deprived of more energy in the lack of garments, than a remaining part of the mangle body, where not so much energy is needed. Preferably, an emanating from an inlet side in the mangle gap Part of the at least one ironer body with steam greater energy content than heated from the opposite outlet side of the mangle gap outgoing part of the same ironer body. Preferably, so different types of steam can be used to heat the one or at least one other part of the respective mangle body, in particular the flattening surface of the same, as needed. Preferably, based on the outgoing from the inlet area plateau of the initial part of the flattening surface is heated with a higher energy density steam than seen in the direction of passage of the laundry through the mangle gap at least adjoining other part of the flattening, preferably one to the end of the flattening at the outlet area extending part of the defect body.

According to an advantageous development of the method, it is provided to use steam as steam having a greater energy content or greater energy density, preferably saturated steam or superheated steam, and steam having a lower energy content or lower energy density, preferably steam. The expanded steam is in particular steam used for heating the initial part of the ironer body. This steam is relaxed outside the iron body and thus virtually recycled so that it is suitable for heating at least one rear part of the iron body. Thus, the maximum possible energy can be withdrawn from the steam to heat the respective ironer body.

It is also conceivable to heat the entire first mangle body with steam of higher energy content or greater energy density in devices with several successive mangle bodies and to heat at least one entire subsequent mangle body with already relaxed steam from the first mangle body, ie steam with lower energy content or lower energy density ,

A preferred embodiment variant of the method provides that the steam having a greater energy content or greater energy density, in particular fresh steam or saturated steam, is removed from the first part of the jacket surface heated by it of at least one ironer body or an initial ironer body and subjected to expansion and / or post-evaporation , The resulting flash steam, so-called Brüdendampf, is then either the other part of the same mangle body, preferably near a discharge area, or another subsequent mangle body fed back. It is quasi cascade-like the steam one or possibly several times relaxed to heat different parts of the same defect body or different successive defect bodies. The energy of the steam is largely exploited. This leads to a particularly economical heating of one or more defect bodies.

Fig. 1

eine schematische Seitenansicht einer als Bändermangel ausgebildeten Vorrichtung zum Mangeln von Wäschestücken,

Fig. 2

eine vergrößerte Einzelheit II aus der Fig. 1,

Fig. 3

die Einzelheit der Fig. 2 für ein alternatives Ausführungsbeispiel,

Fig. 4

die Einzelheit der Fig. 2 für ein weiteres alternatives Ausführungsbeispiel,

Fig. 5

eine Ansicht auf einen linken Teil einer Umlenktrommel eines Eingabeförderers mit mittig horizontal geschnittenen Bürstenringen,

Fig. 6

eine schematische Seitenansicht eines zweiten Ausführungsbeispiels einer als Bändermangel ausgebildeten Vorrichtung,

Fig. 7

eine Einzelheit IV aus der Fig. 6,

Fig. 8

ein Dampfleitungsplan der Bändermangel der Fig. 6 und 7, und

Fig. 9

eine schematische Seitenansicht eines dritten Ausführungsbeispiels einer als Bändermangel ausgebildeten Vorrichtung.

Preferred embodiments of the invention will be explained in more detail with reference to the drawing. In this show:

Fig. 1

a schematic side view of a trained as ligaments deficiency device for the lack of laundry,

Fig. 2

an enlarged detail II from the Fig. 1 .

Fig. 3

the detail of Fig. 2 for an alternative embodiment,

Fig. 4

the detail of Fig. 2 for a further alternative embodiment,

Fig. 5

a view of a left part of a tail pulley of an input conveyor with centrally horizontally cut brush rings,

Fig. 6

FIG. 2 a schematic side view of a second embodiment of a device designed as a ligament deficiency, FIG.

Fig. 7

a detail IV from the Fig. 6 .

Fig. 8

a steam pipe plan of the ribbon shortage of Fig. 6 and 7 , and

Fig. 9

a schematic side view of a third embodiment of a trained as ligaments deficiency device.

The figures show various trained as ribbon mangles devices for smoothing laundry items 11, one of which only in the Fig. 2 to 4 is shown. The bracelets can be used in commercial laundries, but also in the household sector. The items of laundry 11 may be both flat linen, for example table linen or bed linen, but also moldings, for example items of clothing.

The in the Fig. 1 and 2 shown ligament deficiency 10 has a single, closed mangle body. This mangle body is designed as a cylindrical mangle roller 12 with a central longitudinal central axis 14. A cylindrical surface 13 of the mangle roller 12 forms a flattening surface.

The wall surface 13 of the mangle roller 12 shown is formed double-walled. An outer wall is formed by an outer cylinder, on the outside of which the flattening surface is located. An inner diameter of smaller inner cylinder forms the second wall of the mangle roller 12. Between the outer and the smaller inner cylinder so formed in the mangle roller 12, a circumferential, ring-like cavity 15 through which a heat transfer medium, in the illustrated embodiment, preferably thermal oil, for heating the lateral surface thirteenth and thus the flattening surface is used. At the location of the circumferential cavity 15, however, a plurality of flow channels for the heat transfer medium can also be arranged in the interior of the ironer roller 12. For example, such flow channels can be formed by so-called cushion plates. In this case, the flow channels are located on the inside of the cylindrical lateral surface 13, limited by a profiled inner plate. The heating of the thermal oil can be done by a in the embodiment shown in the interior of the ironer roller 12 arranged thermal oil heater 16.

The illustrated lack of ribbons 10 further has a preferably over the entire width of the mangle roller 12 extending, endless mangle band 17. The mangle band 17 is the mangle roller 12 assigned to the outside. The mangle band 17 is guided around a large part of the outer circumference of the lateral surface 13 of the mangle roller 12, preferably by 250 ° to 350 °. As a result, a large part of the cylindrical surface 13 serving as a flat surface of the mangle roller 12 is looped around by the endless ironer belt 17.

The mangle band 17 is guided around five deflecting drums 18, 19, 20 in the band deficiency 10 shown here. A deflecting drum 20 arranged slightly next to the uppermost point of the mangle roller 12 forms an inlet region 21 of the ligament deficiency 10. A second deflecting drum 20 arranged at a slight distance next to the deflecting drum 20 at the inlet region 21 forms an outlet region 22 of the ligament deficiency 10. This deflecting drum 20 is slightly deeper By a spacing of the two adjacent, parallel deflection drums 20 at the inlet region 21 and at the outlet region 22, a narrow gap 23 is created between them. Preferably, both deflection drums 20 are driven or drivable. The synchronous operation is brought about by a frequency converter circuit of its electric motors serving for driving. The deflection drums 18 and 19 are not driven, that is freely rotatable about their longitudinal central axes. While the deflection drums 18 and 20 are arranged stationary, the deflection drum 19 is movable, in such a way that a parallel displacement of its longitudinal center or rotation axis by, for example, pressure medium cylinder 24 at opposite ends of the deflection drum 19 are possible. As a result, the endless ironer band 17 can be tensioned.

The three deflection drums 18 and 19 are arranged in three corner regions of a quadrangle. In contrast, the two deflecting drums 20 grouped into a pair are arranged near a fourth corner of the quadrangle; but they do not close the quadrilateral as a result of the gap 23 formed between the deflection drums 20.

The ironer 17 is dimensioned in length so that it on the one hand from the tail pulley 20 at the inlet region 21 to the tail pulley 20 at the outlet region 22, the mangle roll 12 wraps around from the outside, by about 250 ° to 350 °, and on the other hand on an approximately quadrangular Web runs around the mangle roller 12 outside. On this quadrangular path, the empty strand or return strand of the ironer strip 17, which is currently not coming into contact with the item of laundry 11, moves without it coming into contact with the denier roller 12. The mangle roller 12 largely encircling other parts of the ironer strip 17 forms a workstrong, which carries along the respective laundry article 10 with entrainment serving as a plateau surface 13 of the mangle roller 12, wherein the laundry article 11 slides along the Plättfläche. The respectively lacking laundry item 11 lies in a mangle gap 25 between the mangle band 17 and the lateral surface 13 of the mangle roller 12th

The approximately along a quadrangle guided Leertrum the Mangelbands 17 is outside surrounded by a box-shaped housing the ligament deficiency 10. From the housing 26 a suction with a suction fan 27 is led out, whereby warm exhaust air from the interior of the ligament deficiency 10 is sucked. Optionally, the exhaust air can be treated by her energy, for example, be withdrawn by a heat exchanger that is reusable elsewhere in particular a laundry.

The mangle band 17 is designed for reliably frictional, in particular frictional, entrainment of the item of laundry 11, in such a way that it transports the item of linen 11 in the direction of shortage 28 through the mangle gap 25. For this purpose, at least the coming to rest on the laundry item 11 side of the ironer band 17 with an adhesive properties having provided, preferably structured and / or rough surface. On the other hand, the lateral surface 13 of the mangle roller 12 which serves as a plateau surface is non-sticky, in such a way that the garment 11 can easily slide along the plateau surface as a result of the slippage between the garment 11 and the jacket surface 13 of the mangle roller 12. Preferably, such a smooth and non-adherent flattening surface is provided by an outer coating of the lateral surface 13 of the mangle roller 12. This coating may be made of polytetrafluoroethylene or other, good sliding properties plastic, ceramic or a chrome plating. Such coatings are characterized by high wear resistance and are very smooth, so that due to the slip on the flattening surface, the finish on the voltage applied to the ironer roller 12 side of the laundry article 11 is formed. Due to the non-adherent properties of the smooth flat surface, it is not necessary to grow the flat surface which would otherwise be necessary in the case of mangling.

Each item of laundry 11 is stored in the embodiment shown by a feed conveyor 30 of an input machine 29 in front of the inlet region 21 of the ligament deficiency 10 on the over the mangle roller 12 running empty strand of the ironer band 17. From the outlet region 22, the mangled item of laundry 11, for example, reaches an input conveyor 31 of a folding machine 32 and is thus transported away in another way.

So that the laundry article 11 passes distortion-free and / or wrinkle-free into the mangle gap 25 in the inlet region 21, the mangling belt 17 is assigned a supply aid from the outside in the inlet region 21. In the exemplary embodiment shown, the feed aid is designed as a flexible, flexible material strip 33 with good sliding properties (similar to the flattening surface of the mangle roller 12). This strip of material 33 is fixed with its front transverse edge in the deficiency direction 28 or circumferential direction of the ironer strip 17 before the deflecting drum 20 at the inlet region 21 to a stationary holding beam 34. The support bar 34 is positioned slightly above the ironer tape 17 to form an inlet funnel for the garment 11 placed on the ironer belt 17 from the infeed conveyor 30. From the support beam 34, the material strip 33 extends approximately half the circumference of the idler drum 20 into the mangle gap 25. A rear transverse edge 35 of the material strip 33 ends shortly behind the deflection drum 20 in the initial region of the mangle gap 25 (FIG. Fig. 2 ). The at least superficially smooth material strip 33, which is formed for example from a thin sheet or film of tetrafluoroethylene is - as long as there is no laundry item 11 in the inlet region 21 - taken from the mangle band 17 due to the adhesive properties of the same in shortage direction 28 and nestles in the inlet area 21 of outside of the ironer 17 at. The garment 11 to be entered into the ligament deficiency 10 arrives with its leading leading edge 36 into the funnel-shaped inlet gap between the material strip 33 and the ironer band 17. Because of the material strip 33, which adjoins the garniture band 17, the garment 11, as it continues to approach the inlet region 21, is interposed sandwiched the material strip 33 and the ironer tape 17 and fed to the mangle gap 25 at the inlet region 21, taking along the ironer tape 17. Because the material strip 33 terminates in the initial region of the mangle gap 25, the overlap of the laundry article 11 is hereby removed from the material strip 33 so that the laundry article 11 passes between the mangle strip 17 and the flattening surface formed by the jacket surface 13 of the mangle roller 12 in the further course of the mangle gap 25 ( Fig. 2 ).

The outlet region 22 of the ligament deficiency 10 is assigned a discharge aid. This is also formed from a strip of material 37. The delivery aid does not necessarily have to be flexible, so that instead of the material strip 37 it is also possible to provide a thin metal strip, that is to say a discharge plate.

The Ableithilfsmittel forming material strip 37 is firmly connected at its parallel to the longitudinal center axis of the mangle roller 12 extending transverse edge 83 with the outer surface of the mangle roller 12 or other mangle body. As a result, this delivery aid is suitable for ligaments lacking, which are provided with a stationary mangle roller 12 or another stationary mangle body.

Starting from the transverse edge 83, the material strip 37 extends over part of the ironing belt 17 guided around the deflection drum 20 so that the laundry article 11 leaving the outlet region 22 is led away from the outer surface of the ironing roller 12 in the outlet region 22 between the ironer belt 17 and the material strip 37 to the directly to the outlet region 22 subsequent conveyor, preferably the provided in the embodiment shown input conveyor 31 for further transport of the mangled garment 11 to the folding machine 32. In the illustrated embodiment, the material strip 37 extends only to the adjacent to the tail pulley 20 positioned deflection drum 84 of the input conveyor 31st The deflecting drum 83 may possibly also be driven.

The embodiment of Fig. 2 is a short gap 85 between the tail pulley 20 at the outlet region 22 and the closely following tail pulley 84 of the input conveyor 31 bridged by means of another Ableithilfsmittels. This Delivery aid is in the embodiment of Fig. 2 formed by a baffle 86. The ends of the fixedly arranged between the idler pulleys 20 and 84 baffle 26 terminate as close as possible before the idler pulleys 20 and 84. The baffle 26 is associated with the coming into contact with the ironer belt 17 underside of the laundry item 11, so from close to the tail pulley 20th lying end at the top of the baffle 26, the laundry item 11 in the outlet region 22 is derived from the ironer tape 17. The laundry article 11 is then guided on the guide plate 86 along the deflection drum 84 and there on an upper run 87 of the input conveyor 31.

Because the garment 11 adheres more strongly to the entrainment of the mangle band 17 than to the smooth cylinder wall of the mangle roller 12, the exposed top surface of the garment 11 associated material strip 37 may be omitted according to an alternative embodiment of the invention, so that only the baffle 86 provided as a single Ableithilfsmittel is. This is especially true for tapes lack 10 with the rotatably drivable mangle roller 12, where a firmly connected to the same material strip 37 is not feasible.

The Fig. 3 shows an alternative embodiment of a the underside of the laundry item 11 associated Ableijilfsmittel in the outlet region 22 of the ligament deficiency 10. This Ableithilfsmittel separates the laundry item 11 in the outlet region 22 pneumatically from the mangle band 17. In addition, the Ableijilfsmittel in the embodiment of Fig. 3 preferably formed by a plurality of air nozzles 89, which are preferably arranged in a direction transverse to the ironing direction 28 series of preferably equidistant from each other. The air nozzles 89 are preferably fed with compressed air. However, it is also conceivable to form one or more air nozzles 89 of at least one fan or to supply at least one fan with air. The air jets of the air nozzles 89 are focused or diffused to an upper reversal region of the guide belt deflecting the ironer belt 17 in the outlet region 22 directed against the deficiency direction 28. Thus, the air jets against the transport direction of the laundry 11. This leads to a particularly effective separation or detachment of the underside of the item of laundry 11 from the facing side of the defect band 17.

The air nozzles 89 are arranged in the intermediate space 85 between the deflection drum 20 of the ironer band 17 in the outlet region 22 of the ligament deficiency 10 and the deflection drum 20 of the ligament deficiency 10 downstream deflection drum 84 of the input conveyor 31. This is not only the detachment of the garment 11 from Lackband 17, it is also an air cushion created by the exiting the air nozzles 89 air in the intermediate space 85, which quasi carries the respective laundry item 11 in the region of the intermediate space 85 and thereby to a smooth transition of the mangled garment 11 from the ironer tape 17 to the upper run 87 of the Input conveyor 31 leads.

Also at the in Fig. 3 illustrated embodiment of the invention, the outer exposed side of the garment 10 associated flexible material strip 37 is missing, so that in the outlet region 22 only the voltage applied to the mangle band 17 underside of the garment 11 associated pneumatic Ableithilfsmittel preferably a series of a plurality of air nozzles 89 is provided.

The Fig. 4 and 5 show a further embodiment of the one coming in contact with the mangle band 17 bottom of the garment 11 associated Ableithilfsmittels. This Ableithilfsmittel works mechanically with bristles 93. The bristles 93 engage in the outlet region 22 of the ligament deficiency 10 on the outside of the laundry article 11 through the mangle gap 25 entnehmenden underside of the ironer band 17, namely where the laundry item 11 from the ironer band 17 for removal to a Subsequent conveyor, in the embodiment shown, the input conveyor 31 of the folding machine 32, to be transferred. The bristles 93 of the delivery aid simultaneously transport the garment 11 located thereon, separated from the mangle band 17 in the outlet region 22, onto the upper strand 87 of a next following conveyor, in particular of the input conveyor 31.

In the embodiment shown, the bristles 93 are associated with a plurality of brush rings 90, preferably of the same design, in such a way that they are directed radially outward. The brush rings 90 are assigned to the deflection drum 20 of the ironer band 17 facing deflection drum 84 of the input conveyor 31 of the folding machine 32. But they can also be arranged on a tail pulley of another conveyor.

According to the Fig. 5 For example, the input conveyor 31 has a plurality of closely spaced narrow straps 91. All straps 91 are preferably the same width. In the illustrated embodiment, the distance between each two adjacent straps 91 of the input conveyor 31 is the same size, but slightly smaller than the width of the same width straps 91. The spaced straps 91 formed between two straps 91, a gap 92, each a brush ring 90 is assigned. Of the respective brush ring 90 is non-rotatably connected to the outer cylindrical surface of the tail pulley 84, so that all brush rings 90 rotate with the tail pulley 84 by being driven in rotation by the tail pulley 84. The brush rings 90, in particular the lengths of the bristles 93 thereof, are dimensioned such that the bristles 93 protrude at least with their free end regions opposite the outer surfaces and the upper strand 87 of the narrow straps 91 deflected on the deflection drum 84. In this way, the bristles 93 of the brush rings 90 can come into contact with the underside, namely the abutment side of the laundry item 11 on the ironer 17, and the lateral surface of the tail pulley 20 without the straps 91 and the tail pulley 84 touching the ironer band 17 ( Fig. 4 ).

The Fig. 6 to 8 show a ligament deficiency 38 according to a second embodiment of the invention. This ligament deficiency 38 is in principle designed in the same way as the ligament deficiency 10. Therefore, the same reference numerals are used for the same parts and reference is made to the preceding description of ligament deficiency 10 reference.

In the ligament deficiency 38, the mangle roller 12 is not rotationally driven, so it stands still. This creates a slip between the garment 11 and serving as a plateau cylindrical surface 13 of the mangle roller 12 when the garment 11 is transported through by the mangle gap 25 from the circumferentially driven mangle band 17. This slip is only changeable by the rotational speed of the ironer tape 17th

The mangle band 17 is designed in the same way as in the ligament deficiency 10 and also performed with deflection drums 18, 19 and 20 as well. The mangle band 17 has adhesive properties for entrainment of the garment 11, while just as in the ligament deficiency 10, the lateral surface 13 of the mangle roller 12 smooth, in particular non-adhesive, is formed. Also, the inlet region 21 and the outlet region 22 are formed and arranged in the ligament deficiency 38 as in the ligament deficiency 10. In particular, even in the ligament deficiency 38 in the inlet region 21 and the outlet region 22 strips of material 33, 37 for reliable wrinkle-free feeding of the laundry 10 to the beginning the mangle gap 25 and for transporting out the mangled garment 11 from the mangle gap 25 is provided.

A difference of the ligament deficiency 38 to 10 ligament deficiency is that in the preferably stationary mangle roller 12 or another mangle body two in the circumferential direction of the mangle roller 12 and the mangle body successive Hollow spaces 39 and 40 are formed, through which a heat transfer medium, namely steam, can flow. Each cavity 39 and 40 extends over part of the circumference of the mangle roll 12 and thus also over part of the flattening surface. As a result, the cavities 39 and 40 are arranged in the shortage direction 28 in succession. Both cavities 39 and 40 together extend over the entire or at least almost the entire circumference of the mangle roller 12 or its lateral surface 13. The cavities 39 and 40 are the same width, namely each extend over the entire width of the mangle roller 12th

The cavities 39 and 40 of the mangle roller 12 are formed by a double-walled design of the shell. For this purpose, the mangle roller 12 has an outer cylinder wall 41 for forming the lateral surface 13 with the flattening surface and a concentric inner cylinder jacket 42. The outer diameter of the inner cylinder shell 42 is smaller than the inner diameter of the outer cylinder shell 41, whereby between the cylinder jackets 41 and 42, the cavities 39 and 40 arise. The cavities 39 and 40 have by the formation of two concentric cylinder jackets 41 and 42 over the entire circumference of the ironer roller 12 an equal thickness (seen in the radial direction of the mangle roller 12) on. Separately, the cavities 39 and 40 are separated from each other by continuous radial dividing walls 43 and 44. The dividing walls 43 and 44 may be formed in various manners, for example, by welds of the parts extending over two parts of the mangle roll 12, the partitions 43, 44 arise by welding seams for connecting these parts to their parallel to the longitudinal central axis 14 of the ironer roller 12 extending transverse edges.

The cavity 39 extends from the gap 23 between the deflection drums 20, so the beginning of the inlet region 21. The cavity 39 extends over slightly more than half the circumference of the mangle roller 12, in the embodiment shown about 220 ° to 230 °. In contrast, the smaller or shorter cavity 40 extends over a remaining peripheral region of about 130 ° to 140 °. The cavities 39 and 40 are separated at the lowest point of the mangle roller 12 of the partition wall 44 and adjoin each other directly here. The cavity 40 terminates in the outlet region 22, where it is separated from the cavity 39 by the partition wall 43. As a result, the cavities 39 and 40 in the inlet region 21 and outlet region 22, that is to say in the gap 23 between the deflecting drums 20, also adjoin one another directly.

Where the cavities 39 and 40 meet in the inlet region 21 and the outlet region 22, each cavity 39 and 40 each have at least one preferably lateral feed connection 45, 46 for supplying steam. Where the cavities 39 and 40 meet at the lowest point of the mangle roller 12, each cavity 39, 40 associated with at least one side outlet port 47 and 48, respectively.

The Fig. 8 schematically shows a pipe plan for the steam supply to the mangle roller 12 and the steam discharge. Symbolically, the mangle roller 12 with the cavities 39 and 40 and the feed ports 45, 46 and outlet ports 47, 48 shown. Via a feed line 49, fresh steam, in particular saturated steam or superheated steam, coming from a steam generator, is led via the feed connection 45 approximately to the uppermost point of the longer cavity 39. After the live steam has flowed through the cavity 39 and thereby cooled, the cooled live steam is led via a discharge line 50 to a steam trap 51 and from there to a condensate expansion device 52. From the bottom region of the condensate stripper 52, a discharge line 53 leads to a further steam trap 54 and from there through a discharge line 56 to an outflow.

In the condensate expansion device 52, re-evaporation of the cooled fresh steam originating from the first cavity 39 takes place. This creates relaxation steam, which is also referred to in the jargon as Brüdendampf. This broth steam exits the top of the condensate expansion device 52 and is fed back to the mangle roller 12 via a supply line 55 to the feed port 46 at the beginning of the second cavity 40 in the outlet region 22. At the lower end of the second cavity 40, cooled vapor vapor passes through the outlet port 48 from the mangle roller 12 off. This cooled Brüdendampf is fed via a drain 58 to another steam trap 57. From this, the condensate is optionally passed with residual steam via a discharge line 58 leading to the drain discharge line 56 or directly to the drain.

In the exemplary embodiment shown, the feed line 49 for live steam is assigned a bypass line 59, which opens into the feed line 55 for vapor vapor or flash steam to the cavity 40 or is led directly to the feed connection 46 of the cavity 40. In the bypass line 59 is a shut-off valve, preferably a pressure reducing valve 60, whereby the steam is fresh steam when needed fresh steam mixed, with a reduced pressure, when the valve as shown in the embodiment ( Fig. 8 ) is designed as a pressure reducing valve 60.

As a result of the shortage direction 28 successively arranged cavities 39 and 40, the flat surface of the mangle roller 12 is heated with steam of different energy contents in the ligament deficiency 38. A region of the flattening surface emanating from the inlet region 21 is heated with fresh steam containing more energy, preferably saturated steam or superheated steam. This is advantageous because the garments 11 entering the mangle gap 25 are still moist and the elimination of at least a majority of this residual moisture requires more energy than in the end region of the mangle gap 25 where the garments 11 are almost dry. It is therefore sufficient if steam with less energy, in particular a lower energy density, is used for heating the flattening surface in the cavity 40 associated with the rear portion of the flattening surface. By heating an initial part of the splatter path of the laundry items 10 through the mangle gap 25 with steam of higher energy density than a subsequent, preferably remaining, part of the splat path, the residual energy in the cooled and partially condensed live steam leaving the cavity 39 can also be used to heat the man roller 12 be used by after discharge of the condensate and relaxation of the resulting flash or Brüdendampf passed into the rear cavity 40 and there sufficiently heats the Flättfläche in the back of the Plättwegs.

Inside the mangle roll 12, means may be provided for operating the ribbon deficiency 10 or 38, for example, a condensate heat exchanger or the like.

The live steam flowing through the cavity 39 preferably has a pressure of more than 10 bar. In contrast, the cavity 40 supplied Brüdendampf to a pressure of less than 10 bar.

The ribbon mangles 10 and 38 are each shown with only a single ironer roller 12. Such a mangle roller may have a diameter between 400 mm and 2,200 mm, depending on the desired performance and intended use of ligament deficiency. It is also conceivable to form braided bands of two or more than two consecutive and preferably the same mangle rolls 12. These can be 10 driven circumferentially as in the ligament deficiency, preferably resting at variable speed or 38 according to the ligament deficiency. The heating of the individual successive mangle rolls 12 of such ribbon mangles can be carried out as well as the ribbon mangles 10 and 38. In ribbon mangles with several consecutive mangle roll 12, it may be provided to provide only a single cavity 15 for steam heating in each mangle roll 12. Then the whole Flattening surface of the first mangle roller 12 heated with live steam and the resulting formed from relaxed steam, preferably Brüdendampf, used for heating the flattening surface of the subsequent ironer roller 12. Also, the lead-in area 21 and the lead-out area 22 may be formed in the same manner as in the ribbon mangles 10 and 38 in the case of ribbon mangles with several consecutive mangle rolls.

Finally, it is conceivable to provide the ligament deficiency 38 instead of at least one stationary mangle roller 12 with other deficient bodies, for example non-round deficient bodies such as deficiency bodies with oval, elliptical or similar, optionally also asymmetrical cross-sections.

The Fig. 9 shows another embodiment of a ligament deficiency 61. The shortage principle of this ligament deficiency 61 is the same or at least similar to the ligament deficiency 38. The ligament deficiency 61 has two successive in deficiency 28 successive trough-like mangle body 62 and 63. The mangle bodies 62 and 63 are as a semicircular curved shells formed and in the embodiment shown about the same size. Preferably, the radius of each mangle body 62 and 63 is between 200 mm and 1,500 mm. The mangle bodies 62 and 63, like the mangle roller 12 of the ligament deficiency 38, are stationary by being stationarily arranged in a frame of the ligament deficiency 61.

The two consecutive mangle bodies 62 and 63 are associated with a single, endlessly over the entire width of each mangle body 62 and 63 continuous mangle band 64. The ironer belt 64 is circumferentially drivable as in the previously described bandages 10 and 38. In this case, the endless ironer belt 64 takes the respective laundry article 11 in the direction of shortage 28. This is also achieved in this ligament deficiency 61 by an adhesive, the laundry item 11 facing outside of the ironer band 64 by, for example, the 11 coming into contact with the garment side or surface of the ironer band 14 roughened and rendered liable in any other way. A garment 11 through the mangle gap 25 of each semi-circular mangle body 62 and 63 transporting upper strand of the ironer band 64 is associated with a downwardly facing, convex-trough-like outer side of both mangle bodies 62 and 63. The mangle band 64 runs successively under the semicircular underside of the first mangle body 62 and the subsequent second mangle body 63 along with the respective garment 11 along. Between the ironer band 64 and the respective mangle body 62, two successive, semi-circular mangle gaps 65 are thus formed. An empty bottom strand of the ironer band 64 runs under the top of the shortage belt 64 formed by the two mangle bodies 62 and 63 double-semi-circular shaped strand.

At a front transverse edge of the first mangle body 62 there is an inlet region 66 of the ligament deficiency 61, where the respective garment 11 enters the mangle gap 65 of the first mangle body 62 seen in the deficiency direction 28. At the end of the first mangle body 62 is an outlet region 67. At a short distance behind an inlet region 68 for the second semicircular mangle body 63 is formed. At the end of the second mangle body 63 is an outlet region 69, at which the mangled garment 11 leaves the last mangle body 63 and thus the ligament deficiency 61, for example, to be fed to the input conveyor 31 of a folding machine 32.

The inlet areas 66 and 68 both mangle bodies 62 and 63 and also the outlet areas 67, 69 both mangle bodies 62 and 63 can in the Fig. 9 not shown material strip 33 or 37 assigned. The strips of material at the outlet region 67 of the first mangle body 62 and the inlet region 68 of the second mangle body 63 reliably guide the garment 11 from the first mangle body 62 to the next second mangle body 63.

The only mangle band 64 of the ligament deficiency 61 is guided in the illustrated embodiment by three upper deflecting drums 70 and two lower deflecting drums 71. At least one of the deflection drums 70 and 71 is rotatably driven, preferably the first or last upper deflection drum 70. However, it is also conceivable to drive the first and the last upper deflection drum 70 synchronously rotating, wherein the synchronous operation is brought about by a frequency converter circuit, not shown. The two lower deflection drums 71 and preferably also the middle upper deflection drum 70 are not driven and thus freely rotatable. One of the lower deflection drums 71 can be transversely displaceable and thereby serve as a tensioning device for the ironer belt 64.

Each of the identically formed, semi-circular mangle bodies 62 and 63 of the ligament deficiency 61 is hollow, namely has between two spaced, semicircular plates on a semi-circular cavity 74. The outer plate 72 of each mangle body 62 and 63 forms a semicircular flattening surface on which the garment 11th slidably moved along with the driving of the circumferentially driven ironer belt 64 is. For this purpose, coming into contact with the respective laundry item 11 Flättfläche the outer plate 72 of each mangle body 62 and 63 is provided with a wear-resistant non-stick coating, which may be formed as in the lateral surface 13 of the mangle roller 12 of the embodiments described above. The cavity 74 of each mangle body 62 and 63 can be flowed through by a heat carrier, for example a thermal oil or steam, which causes each mangle body 62, 63 to heat up, in particular the platelet surfaces formed by the outer plates 72.

If the ligament deficiency 61, like the ligament deficiency 38, is heated with steam, live steam, ie superheated steam or saturated steam, can be passed through the cavity 74 of the first mangle body 62. The cooled main steam leaving the first mangle body 62 is, after conditioning, preferably condensate separation and expansion, supplied as expansion or broth steam to the cavity 74 in the second mangle body 62 to heat it, especially its outer plate 72 forming the platelet surface. The supply of both the live steam and the relaxed Brüdendampfs preferably takes place at both overhead transverse edges of each mangle body 62 and 63. The discharge of cooled live steam and the Brüdendampfs takes place at the lowest point of each semicircular mangle body 62, 63, namely approximately in the middle. The steam guide and conditioning can be done in the ligament deficiency 61 as well as in the Fig. 8 in connection with ligament deficiency 38. Reference is made to the accompanying description.

It is also conceivable, as in the ligament deficiency 38 in each semicircular mangle body 62, 63 to form two successive cavities, which are supplied with steam of different energy densities, preferably for a live steam and the other Brüdendampf, each to a portion of the flattening surface of each mangle body 62nd , 63 to heat.

The ironer belts 17 and 64 are structured at least on the coming into contact with the laundry items 11 side. These sides thus form an adhesive surface and / or friction surface for the slip-free entrainment of the laundry items 11 from the circumferentially driven ironer belts 17 and 64, wherein the laundry items 11 slide along the smooth flattening surface of the ironer roller 12 or the ironer bodies 62, 63 or a slip between the ironer bodies 62nd , 63 and the laundry items 10 is formed.

The structuring of those sides of the ironing belts 17, 64, which come into contact with the laundry 11, can be done in various ways. It is preferably provided that at least the coming into contact with the laundry items 11 surface of the ironer bands 17, 64 are formed rough or roughened. The roughness or roughening takes place in such a way that the coefficient of friction of the side coming into contact with the items of laundry 11 is greater than that of the pieces 11 to be taken. This results in no slippage between the respective narrower band 17, 64 and the items of laundry 11 during transport along the same smooth flattening surface of the stationary or at speed deviating from the speed of rotation of the ironer belts 17, 64 speed deficient body.

The ironer belts 17, 64 may be single-layered, but also multi-layered. In the case of multi-layered ironer strips 17, 64, the layer coming into contact with the items of laundry 11 is designed as an adhesive or friction layer.

At least the adhesive and friction layer of the respective ironer tape 17, 64 is formed from a felt, preferably a coarse textured felt or a needle felt. The felt or needle felt preferably consists of a heat-resistant or highly heat-resistant material. For example, these may be synthetic fibers such as highly heat-resistant plastic fibers, for example aramid, glass fibers, carbon fibers or mixtures of such fibers. It is also conceivable to form the adhesive or friction layer at least partially from natural fibers which have good heat resistance or are treated accordingly.

The ironer tapes 17, 64 may have a layer that is high tensile or has reinforcements to increase tensile strength. But it is also conceivable to provide the ironer bands 17, 16 with reinforcements. The reinforcements are at least longitudinal stiffeners, but possibly also to these crossing transverse stiffeners. Preferably, these stiffeners of, for example, high tensile solid fibers or strands are embedded in the material of the ironer bands 17, 64.

The features explained and described above in connection with the individual bracelets can be combined with one another as desired. Thus, the features of certain embodiments of the bracelets may also apply to other embodiments of the bracelets or features related to have been described with one or a few bracelets, also apply to the other ligament deficiencies, without being mentioned in the above description. <B> LIST OF REFERENCES: </ b> 10 bands shortage 48 outlet port 11 laundry 49 supply line 12 mangle roll 50 derivation 13 lateral surface 51 Steam Traps 14 Longitudinal central axis 52 condensate flash 15 cavity 53 drain line 16 thermal oil heater 54 Steam Traps 17 lack band 55 supply line 18 Umlenktrommel 56 derivation 19 Umlenktrommel 57 Steam Traps 20 Umlenktrommel 58 derivation 21 intake area 59 bypass line 22 discharge area 60 Pressure reducing valve 23 gap 61 bands shortage 24 Pressure cylinder 62 lack body 25 lack gap 63 lack body 26 casing 64 lack bands 27 aspirator 65 lack gap 28 lack direction 66 intake area 29 Feeding machine 67 discharge area 30 feed conveyor 68 intake area 31 input conveyor 69 discharge area 32 folding machine 70 upper tail pulley 33 strips of material 71 lower tail pulley 34 support beam 72 outer plate 35 transverse edge 73 inner plate 36 leading edge 74 cavity 37 strips of material 83 cross-border 38 bands shortage 84 Umlenktrommel 39 cavity 85 gap 40 cavity 86 baffle 41 outer cylinder jacket 87 obertrum 42 inner cylinder jacket 89 air nozzle 43 partition wall 90 brush ring 44 partition wall 91 belt 45 feed connection 92 gap 46 feed connection 93 bristle 47 outlet port

Claims (13)

Device for mangling laundry items (11) having at least one mangle body and at least one mangle band (17, 64) which is rotatably drivable and associated with the at least one mangle body, wherein the garments (11) pass through a mangle gap (25) between the respective mangle body and the mangle body at least one outlet region (22; 67, 69) of the respective mangle gap (25) is assigned at least one discharge aid for mangled laundry items (11), characterized in that at least one delivery aid is present as one thin-walled strip of material (37) or an optionally flexible sheet metal strip is formed, which is fixed at the end of the mangle gap (25) with a front transverse edge on the stationary ironing body for guiding or leading gembelter laundry items (11) in the outlet region (22; 67, 69) between the mangle band (17; 64) and the material strip (37) or sheet metal strip s. Apparatus according to claim 1, characterized in that at least one surface coming into contact with the laundry item (11), preferably also a surface of the material strips (33, 37) or the metal strip coming into contact with the jacket surface (13) of the ironer body, has good sliding properties has and / or is non-adhesive, for example, is formed from polytetrafluoroethylene or has such a coating. Apparatus according to claim 1 or 2, characterized in that a further discharging aid is associated with a side or surface of the item of laundry (11) which comes into contact with the ironer belt (17; 64) and / or which bears against the ironer belt (17; 64) Side or surface of the laundry article (11) associated discharge means mechanically and / or pneumatically the respective laundry item (11) from the ironer tape (17; 64) separates, preferably strips or blows off. Device according to claim 3, characterized in that a rejecting means of a deflection drum (20) of the ironer band (17; 64) is associated with the ligament deficiency (10) at the outlet region (22; 67; 69), wherein in particular the rejection aid as at least one of the deflecting drums (16; 20) of the ironer band (17; 64) at the outlet region (22; 67; 69) of the band deficiency (10) associated, preferably stationary, scrapers such as a baffle (86) is formed. Device according to claim 3 or 4, characterized in that the discharge aid has at least one air nozzle (89) supplied with air, preferably compressed air, whose jet of air is directed against the side or surface of the item of laundry (11) lying against the ironer belt (17; is. Device according to one or more of claims 3 to 5, characterized in that the discharge aid of at least one preferably rotating brush preferably a plurality of brush rings (90) is formed, wherein preferably the brush or brush rings (90) to the outlet region (22; 69) of the ligament-deficient (10) facing drum of a belt deficiency (10) in the direction of deficiency (28) following belt conveyor, preferably one of the mangled items of laundry (11) to the folding machine (32) transporting input conveyor (31) are assigned. Apparatus according to claim 6, characterized in that the brushes are formed as connected to the lateral surface of the drum and with the drum co-rotating brush rings (90), preferably the brush rings (90) in at least some gaps (92) between adjacent narrow straps (91). the belt conveyor or input conveyor (31) are arranged. Device according to one of Claims 1 to 7, characterized in that the lateral surface (13) which comes into contact with the items of laundry (11), in particular the platelet surface formed therefrom, has at least one lacking body non-adhesive properties, preferably provided with a wear-resistant non-stick coating and the at least one mangle band (17; 64) has adhesive properties for entrainment, in particular slippage-free entrainment, of the items of laundry (11) during the passage past the lateral surface (13) or flat surface of the at least one mangle body. Device for mangling laundry items (11) with at least one ironer body and at least one ironing belt (17, 64) associated with the at least one ironer body, wherein the laundry items (11) are separated by a mangle gap (25) between the respective ironer body or garments the mangle band (17, 64) associated therewith can be transported through, in particular according to claim 3 or 4, characterized in that the jacket surface (13) delimiting the mangle gap (25) at least one mangle body at least two separate, longitudinally of the mangle gap (25) and or in the circumferential direction of the lateral surface (13) successive cavities (39, 40) are assigned to heat carrier for heating the ironing body or in several successive mangle bodies, the cavities of the individual mangle bodies are supplied with steam of different energy contents. Apparatus according to claim 9, characterized in that each cavity (39, 40) at least one feed connection (45, 46) for supplying the heat carrier, in particular steam, and at least one outlet connection (47, 48) for discharging the heat carrier, in particular steam , wherein the respective feed connection (45, 46) is assigned to at least one upper region of the respective mangle body and the respective outlet port (47, 48) to a lower region of the respective mangle body and / or to an outlet port (47) of one of live steam, in particular saturated steam or superheated steam , Traversed cavity (39) is associated with a line leading to a condensate and / or a Dampfentspannungseinrichtung and the condensate or Dampfentspannungseinrichtung a line for supplying flash steam or Brüdendampf to the feed port (46) of another cavity (40) is assigned. Method for mangling laundry items (11), wherein the laundry items (11) are transported through a mangle gap (25) between at least one ironer body and at least one ironer belt (17, 64) and a jacket surface of at least one ironer body is heated with steam, characterized in that the sheath area (13) of the at least one shard body or the lateral surfaces (13) several successive mangle bodies is heated with steam of different energy contents or become. A method according to claim 11, characterized in that a part of the lateral surface (13) of at least one iron body is heated with a greater energy content steam than at least another part of the same mangle body or another mangle body, preferably one of an inlet region (21) of the laundry ( 11) in the mangle gap (25) outgoing part of the at least one mangle body or the first mangle body is heated with steam higher energy content than one of a run-out area (22) of the same mangle body outgoing part of the same or another, subsequent mangle body. A method according to claim 11 or 12, characterized in that as steam with a larger energy content live steam, preferably saturated steam or hot steam, and as steam with a lower energy content relaxed steam, in particular flash steam or Brüdendampf used, and / or the steam with a larger energy content, in particular fresh or saturated or superheated steam, removed from the heated first part of the lateral surface (13) of a first mangle body or a previous mangle body and subjected to re-evaporation, wherein the resulting flash steam or Brüdendampf the other part of the same ironing body or a subsequent Ironing body is supplied.

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