EP1120488B1 - Trough mangle - Google Patents

Trough mangle Download PDF

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Publication number
EP1120488B1
EP1120488B1 EP01101708A EP01101708A EP1120488B1 EP 1120488 B1 EP1120488 B1 EP 1120488B1 EP 01101708 A EP01101708 A EP 01101708A EP 01101708 A EP01101708 A EP 01101708A EP 1120488 B1 EP1120488 B1 EP 1120488B1
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EP
European Patent Office
Prior art keywords
welding
trough
turn
radius
mangle
Prior art date
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Expired - Fee Related
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EP01101708A
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German (de)
French (fr)
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EP1120488A3 (en
EP1120488A2 (en
Inventor
Engelbert Heinz
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Kannegiesser Aue GmbH
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Kannegiesser Aue GmbH
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Publication of EP1120488A2 publication Critical patent/EP1120488A2/en
Publication of EP1120488A3 publication Critical patent/EP1120488A3/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F67/00Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00
    • D06F67/08Beds; Heating arrangements therefor

Definitions

  • the invention relates to a trough lack according to the preamble of claim 1.
  • Trough ironers have at least one curved, flexible Lack trough, which is about the lower half of a drivable Ironer is assigned.
  • the respective shortage is heated by a flowing heat transfer medium, such as Example steam.
  • the heat transfer medium is under pressure the shortage trough passed through.
  • the walls of the double-walled trough are formed made of relatively thin, flexible sheets.
  • the walls or sheets are welded together, on the one hand through welds on the outer edge and the other on theirs Surfaces through a grid of welds. Between Weld spots are caused by a deformation (expansion) of the outer wall the flow channels for heating the Defect well serving heat transfer medium is formed.
  • weld spots are for area-wise connection of the walls or sheets as Weld spots formed see e.g. EP 0 573 402 A1. These weld spots only have about a limited resilience because they only have one can have a relatively small area. Large welding spots would cause a deformation of those facing the ironer inner flat surface of the lack well, including the Deficiency quality suffers if you do not follow this deformation welding by mechanical finishing of the inside the lack well removed.
  • the object of the invention is based on the foregoing to create a trough lack, in which the walls are connected by heavy-duty welds, which the Do not impair the inner surface (flattened surface) or not significantly.
  • a lack of troughs to solve this task has the features of claim 1.
  • circumferential in particular multiple circumferential welds will increase the effective welding area achieved against welding spots, preferably by the annular circumferential welds during the welding process Accumulation of energy is avoided, which affects the inner surface of the Wall of the mangle trough (flat surface) not or not significantly impaired. It will be one high-strength connection of the walls of the lack trough to everyone Welding point reached, which also higher internal pressures of the Deficiency trough reliably withstands without it being a significant one or expensive post-processing of the flattening surface is required
  • the weld seam of the welds is preferably endless.
  • the weld seam ends at the respective welding point the same place from which it starts.
  • the weld seam of the each welding point thus has a closed one Path that is preferably circular and / or spiral.
  • Such an endless weld with a closed seam is particularly resilient because there are no open weld ends are present, which promote the tearing of the weld could.
  • the Weld of the welds preferably each weld, several times, for example three times, completely.
  • the circulations of the weld seam are included dimensioned so that the weld seam sections of the individual Circuits do not overlap and / or touch. Just on The weld seam sections intersect at least one crossing point different rounds so that the end of Weld seam can get back to the beginning of the same Formation of a closed, endless weld.
  • the weld seam sections of the individual Only cut circulation, but not overlay or touch there will be an accumulation of energy at each Avoided welding spot.
  • the invention trained welds not the flattened surface or not significantly affect, so that no post-processing requires or at least no significant post-processing is required.
  • all orbits around a common center It changes the radius of at least part of a revolution Weld continuously so that it welds at least partially revolves in a spiral. This can cause a Coverage or overlap of the weld seam sections of different Circulations are prevented, so that by the individual Circulations formed annular parts of the welds are at least partially, preferably largely adjacent to one another and sometimes run parallel to each other.
  • Fig. 1 shows an example of a trough lack according to the Invention.
  • the shown trough lack has two with Distance between the shortages 10 and 11, two each ironer 10 and 11 associated ironer rollers 12 and 13th and a bridge 14 between the successive ones at a distance Deficiency troughs 10 and 11.
  • the trough lack has also via a base frame 15, which the two shortages 10 and 11 carries.
  • the invention is also suitable for Trough ironers the more than two ironer troughs 10, 11 and ironer rollers 12, 13 or only through a single defect trough 10 and ironing roller 12 have. In the latter case the trough lack over no bridge 14.
  • the two in the embodiment shown are preferably the same trained ironing rollers 12 and 13 have a cylindrical Shape up. They are each about a central axis of rotation 16 and 17 continuously rotatable.
  • the outer cylinder jacket each ironer roller 12 and 13 is not with one in the figures provided wrapping shown.
  • the deficiency troughs 10 and 11, which are generally of the same design have an approximately semicircular cross section.
  • the Deficiency troughs 10 and 11 essentially surround the lower half of each ironer roller 12 and 13 (Fig. 1 and 2).
  • a domed inside of each trough 10 and 11 forms one smooth plate surface 18 and 19.
  • each trough 10 and 11 and the winding formed lateral surface of each ironing roller 12 and 13 are in the Figures not shown textile objects, in particular Items of laundry that can be moved through the trough.
  • To is between each trough 10 or 11 and the associated ironer roller 12 and 13 in the figures better visibility in an enlarged width, approximately semicircular nip 39. Wherever between the respective ironer roller 12 or 13 and the ironer 10 or 11 there is no laundry item at the moment elastic winding of the ironer roller 12 or 13 on the smooth Flat surface 18 and 19 of the respective trough 10 and 11.
  • the troughs 10 and 11 are elastic and double-walled.
  • the walls of the troughs 10 and 11 are made thin, elastic plates or sheets formed.
  • the plates or sheets are made of steel, preferably stainless steel, especially stainless steel.
  • Through the double-walled design of the troughs 10 and 11 are in Inside the same cavities.
  • Through the cavities of the Lack troughs 10 and 11 is a pressurized heat transfer medium hin tellleitbar.
  • the heat transfer medium is used for Heating of the troughs 10 and 11. These are a heated fluid, especially steam. Connections to Feeding the heat transfer medium to the mangle troughs 10 and 11 and for removing the heat transfer medium are for reasons of simplification not shown in the figures.
  • the mostly spaced, curved sheets for the formation of the shortages 10 and 11 are in the here shown trough lack of different thickness.
  • inner sheet 20 formed thicker than an outer sheet 21.
  • the sheet thicknesses for the thicker, inner sheet 20 can range between 3 mm and 6 mm.
  • the thickness of the inner sheet 20 about 4 mm.
  • the thicknesses of the thinner, outer Sheet 21 can be in the range between 0.5 mm and 3 mm.
  • the thickness of the outer sheet 21 is approximately 1.5 mm.
  • the thickness ratio between the inner sheet 20 and the outer sheet 21 is in the range of 2 to 3.5. It is also conceivable, the inner and outer sheets 20, 21 with about to be of the same thickness.
  • the sheets 20 and 21 then have about thicknesses in the range between 2 mm and 5 mm, in particular 3 mm to 4 mm.
  • Both sheets 20 and 21 to form the respective lack trough 10 and 11 are connected together at their edges, preferably welded, in particular by Laser welding. As a result, the cavities 22 and 23 are between the sheets 20 and 21 of each trough 10, 11 fluid-tight.
  • the Sheets 20, 21 of each trough 10 and 11 are also together connected by on the area in particular the respective outer sheet 21 evenly distributed in a grid pattern Welding points 24.
  • the welding points 24 are in the exemplary embodiment shown all trained equally. Through the Welds 24 are the sheets 20 and 21 of the troughs 10 and 11 connected to each other in some areas.
  • the welds 24 are in several parallel rows the same distances in a row.
  • the Welds 24 of adjacent rows are offset from one another, and preferably by half the distance between two successive ones Welds 24 in a row. Thereby are the welds 24 of adjacent rows on a gap.
  • the Distances between adjacent, preferably horizontal rows are like this chosen that the distances between adjacent welds 24 in of the respective row are about the same size as the diagonal Distances of the welds 24 lying on the gap between adjacent ones Rows (Fig. 3).
  • the areas of the outer area surrounding the welds 24 Sheet 21 of each trough 10 and 11 are from the inner sheet 20th spaced. This can only be achieved through hydraulic deformation of the outer sheet 21.
  • the inner sheet 20 each Deficiency trough 10 and 11, however, is also outside the areas the welds 24 undeformed.
  • deforming namely Widen the outer sheet 21 of each trough 10 and 11th the cavities come in the double-walled trough 10 and 11.
  • the fact that the cavities 24 surrounded, arise in the interior of the troughs 10 and 11 Flow paths that serve the heat transfer medium, in particular Heating medium, such as water vapor, evenly to pass through the flow paths of each ironer 10 or 11.
  • the bridge 14 is also semicircular and curved flexible.
  • the bridge 14 can, like the troughs 10 and 11 be educated. Then an upper sheet is the same as that inner sheet 20 of the troughs 10 and 11 formed smooth. Over the top outside of the smooth top sheet of the bridge 14 the laundry items from the first ironing roller 12 to second mangle roller 13 passed.
  • Each trough 10 and 11 is with its opposite, parallel to the axes of rotation 16 and 17 of the ironing rolls 12 and 13 running longitudinal side edges 26, 27, 28, 29 on the base the trough lack stored.
  • everyone is lacking 10 and 11 on a longitudinal side edge 26, 28 a fixed Bearing and on the other, opposite longitudinal side edges 27, 29 each assigned a movable bearing.
  • the moveable Bearings of the longitudinal side edges 27 and 29 are as pendulum supports 30, 31 formed.
  • Each long edge is preferably 27 and 29 a continuous over the entire length of the same Pendulum support 30, 31 assigned.
  • the pendulum supports 30 and 31 are slightly inclined to the vertical, in such a way that their upper ends 32 to the respective ironing roller 12 or 13 point.
  • the welding points are the same as one another 24 trained.
  • All welds 24 are preferred by laser welding or a comparable welding process, for example, plasma welding.
  • 4 to 7 show one of the welds 24 enlarged each weld 24 by a multiple ring all-round, endless weld seam, preferably laser weld seam, educated.
  • the weld 24 is thereby ring-shaped, namely more specifically, multiple rings, trained.
  • the welding point shown in the present exemplary embodiment 24 has a weld seam that runs three times.
  • the The weld seam therefore consists of three revolutions 33, 34 and 35 of 360 ° together.
  • the weld begins at the first Circulation 33 at a point 36.
  • the weld seam ends at the end of the third round 35 also at point 36 the multiple circumferential weld seam is endless.
  • the sections of the Weld of each revolution 33, 34 and 35 are essentially spaced side by side so that the weld seam sections the different rounds 33, 34 and 35 not overlap.
  • the crosses Weld seam only at a crossing point 37 of the second Circuit 34 and the third circuit 35. Also touch the sections of the weld at the end of the first round 33, at the beginning of the second round 34 and at the end of the third Orbit 35 at location 36.
  • the radii of all three revolutions 33, 34 and 35 of the weld seam lie on a common center 38.
  • the first revolution 33 of the weld seam is circular with the radius R 1 around the center 38.
  • the revolution 33 therefore begins and ends at point 36 the point 36 starts the second revolution 34 with a radius that increases continuously, in particular continuously, over half the revolution (180 °), namely from the radius R 1 to the larger radius R 2 (FIG. 6).
  • This area of the weld seam runs in a spiral.
  • the weld seam then runs over the second half (180 °) of the second circulation 34 in a semicircle with a constant radius R 2 , which also starts from the center 38 (FIG. 6).
  • the second revolution 34 is continued by the third revolution 35.
  • the revolution 35 has a constantly changing radius, which also starts from the center 38.
  • the radius of the radius R 2 at the beginning of the third revolution 35 increases steadily over half of the revolution (180 °), namely extends in a spiral fashion up to the radius R 3 .
  • the radius of the revolution 35 becomes smaller and smaller, namely decreases from the radius R 3 in a spiral manner to the radius R 1 .
  • the third round 35 ends at the beginning and at the end of the first round 33, specifically at point 36 (FIG. 7).
  • the third circulation 35 runs in the region of its first four part (90 °) along a quarter circular path with the radius R 2 .
  • the ratio of the radii R 2 to R 1 is in the range from 1.2 to 1.8, in particular is approximately 1.5.
  • the ratio of the radii R 3 to R 1 is in the range from 1.7 to 2.3, in particular is approximately 2.
  • the Welds 24 welds with more or less than three Have revolutions 33, 34, 35.
  • the dimensions and geometric Designs (courses) of the circulation can also from shown embodiment differ.
  • Preferably at differently designed welds 24 always the welds endless, so they end where they started to have.
  • the course of the welds of the welds 24 circular or sequential part circular sections and spiral sections vary.
  • the weld seam can be any weld 24 exclusively from spiral runs be educated.
  • the weld each welding point by several circles of the same or different To form radii, with the centers of the Circles are unequal, that is, in different places are adjacent.

Description

Die Erfindung betrifft eine Muldenmangel gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a trough lack according to the preamble of claim 1.

Muldenmangeln verfügen über mindestens eine gewölbte, flexible Mangelmulde, die etwa der unteren Hälfte einer drehend antreibbaren Mangelwalze zugeordnet ist. Die jeweilige Mangelmulde ist beheizbar durch ein strömendes Wärmeträgermedium, wie zum Beispiel Dampf. Das Wärmeträgermedium wird unter Druck durch die Mangelmulde hindurchgeleitet. Dazu verfügt die Mangelmulde über einen doppelwandigen Aufbau, wodurch Strömungskanäle für das Wärmeträgermedium in der Mangelmulde bildbar sind. Trough ironers have at least one curved, flexible Lack trough, which is about the lower half of a drivable Ironer is assigned. The respective shortage is heated by a flowing heat transfer medium, such as Example steam. The heat transfer medium is under pressure the shortage trough passed through. In addition, there is a shortage trough over a double walled structure, whereby flow channels for the heat transfer medium can be formed in the ironer.

Die Wandungen der doppelwandigen Mangelmulde werden gebildet aus verhältnismäßig dünnen, flexiblen Blechen. Die Wandungen bzw. Bleche sind miteinander verschweißt, und zwar zum einen durch Schweißnähte am äußeren Rand und zum anderen auf ihren Flächen durch ein Raster von Schweißstellen. Zwischen den Schweißstellen sind durch eine Verformung (Aufweiten) der äußeren Wandung die Strömungskanäle für das zur Beheizung der Mangelmulde dienende Wärmeträgermedium gebildet.The walls of the double-walled trough are formed made of relatively thin, flexible sheets. The walls or sheets are welded together, on the one hand through welds on the outer edge and the other on theirs Surfaces through a grid of welds. Between Weld spots are caused by a deformation (expansion) of the outer wall the flow channels for heating the Defect well serving heat transfer medium is formed.

Bei bekannten Mangelmulden dieser Art sind die Schweißstellen zur bereichsweisen Verbindung der Wandungen bzw. Bleche als Schweißpunkte ausgebildet siehe z.B. EP 0 573 402 A1. Diese Schweißpunkte verfügen nur über eine begrenzte Belastbarkeit, weil sie nur über eine relativ kleine Fläche verfügen können. Großflächige Schweißpunkte würden zu einer Verformung der zur Mangelwalze weisenden inneren Plättfläche der Mangelmulde führen, worunter die Mangelqualität leidet, sofern man diese Verformung nicht nach dem Schweißen durch eine mechanische Nachbearbeitung der Innenseite der Mangelmulde beseitigt.In the case of known troughs of this type, the welding points are for area-wise connection of the walls or sheets as Weld spots formed see e.g. EP 0 573 402 A1. These weld spots only have about a limited resilience because they only have one can have a relatively small area. Large welding spots would cause a deformation of those facing the ironer inner flat surface of the lack well, including the Deficiency quality suffers if you do not follow this deformation welding by mechanical finishing of the inside the lack well removed.

Bei Muldenmangeln mit hoher Mangelleistung wird die Mangelmulde mit unter hohem Druck stehenden Wärmeträgermedium, insbesondere Dampf, beaufschlagt. Dadurch entsteht in der Mangelmulde ein Innendruck, dem Schweißpunkte herkömmlicher Mangelmulden nicht mehr Stand halten können.In the case of trough ironers with high ironer performance, the ironer ironer becomes with high-pressure heat transfer medium, in particular Steam, applied. This creates a in the lack trough Internal pressure, the welding spots of conventional lack wells not can stand more.

Der Erfindung liegt ausgehend vom Vorstehenden die Aufgabe zugrunde, eine Muldenmangel zu schaffen, bei der die Wandungen durch hochbelastbare Schweißstellen verbunden sind, die die Innenfläche (Plättfläche) nicht oder nicht nennenswert beeinträchtigen.The object of the invention is based on the foregoing to create a trough lack, in which the walls are connected by heavy-duty welds, which the Do not impair the inner surface (flattened surface) or not significantly.

Eine Muldenmangel zur Lösung dieser Aufgabe weist die Merkmale des Anspruchs 1 auf. Durch die Bildung der Schweißstellen aus jeweils umlaufenden, insbesondere mehrfach umlaufenden Schweißnähten wird eine Vergrößerung der wirksamen Schweißfläche gegenüber Schweißpunkten erzielt, wobei durch die vorzugsweise ringförmig umlaufenden Schweißnähte beim Schweißprozeß eine Energieanhäufung vermieden wird, die die Innenfläche der zur Mangelwalze weisenden Wandung der Mangelmulde (Plättfläche) nicht oder nicht nennenswert beeinträchtigt. Es wird so eine hochfeste Verbindung der Wandungen der Mangelmulde an jeder Schweißstelle erreicht, die auch höheren Innendrücken der Mangelmulde zuverlässig Stand hält, ohne dass es einer nennenswerten bzw. aufwendigen Nachbearbeitung der Plättfläche bedarf.A lack of troughs to solve this task has the features of claim 1. By forming the welds circumferential, in particular multiple circumferential welds will increase the effective welding area achieved against welding spots, preferably by the annular circumferential welds during the welding process Accumulation of energy is avoided, which affects the inner surface of the Wall of the mangle trough (flat surface) not or not significantly impaired. It will be one high-strength connection of the walls of the lack trough to everyone Welding point reached, which also higher internal pressures of the Deficiency trough reliably withstands without it being a significant one or expensive post-processing of the flattening surface is required

Vorzugsweise ist die Schweißnaht der Schweißstellen endlos. Dazu endet die Schweißnaht der jeweiligen Schweißstelle etwa an der gleichen Stelle, von der sie ausgeht. Die Schweißnaht der jeweiligen Schweißstelle verfügt somit über eine geschlossene Bahn, die vorzugsweise kreis- und/oder spiralförmig verläuft. Eine solche endlose Schweißstelle mit einer geschlossenen Naht ist besonders belastbar, weil keine offenen Schweißnahtenden vorhanden sind, die ein Aufreißen der Schweißstelle begünstigen könnten.The weld seam of the welds is preferably endless. For this purpose, the weld seam ends at the respective welding point the same place from which it starts. The weld seam of the each welding point thus has a closed one Path that is preferably circular and / or spiral. Such an endless weld with a closed seam is particularly resilient because there are no open weld ends are present, which promote the tearing of the weld could.

Gemäß einer bevorzugten Ausgestaltung der Erfindung läuft die Schweißnaht der Schweißstellen, vorzugsweise jeder Schweißstelle, mehrmals, zum Beispiel dreimal, vollständig um. Die Schweißstelle wird dadurch aus einer Schweißnaht mit mehreren 360°-Umläufen gebildet. Die Umläufe der Schweißnaht sind dabei so bemessen, dass die Schweißnahtabschnitte der einzelnen Umläufe sich nicht überlagern und/oder berühren. Lediglich an mindestens einem Kreuzungspunkt schneiden sich die Schweißnahtabschnitte unterschiedlicher Umläufe, damit das Ende der Schweißnaht wieder zum Anfang derselben gelangen kann zur Bildung einer geschlossenen, endlosen Schweißstelle. Dadurch, dass sich erfindungsgemäß die Schweißnahtabschnitte der einzelnen Umläufe nur schneiden, aber nicht überlagern bzw. berühren, wird eine Energieansammlung an der jeweiligen Schweißstelle vermieden. Die Folge ist, dass die erfindungsgemaß ausgebildeten Schweißstellen die Plättfläche nicht oder nicht nennenswert beeinträchtigen, so dass diese keine Nachbearbeitung erfordert oder zumindest keine nennenswerte Nachbearbeitung erforderlich ist.According to a preferred embodiment of the invention, the Weld of the welds, preferably each weld, several times, for example three times, completely. The This creates a weld from one weld with several 360 ° revolutions formed. The circulations of the weld seam are included dimensioned so that the weld seam sections of the individual Circuits do not overlap and / or touch. Just on The weld seam sections intersect at least one crossing point different rounds so that the end of Weld seam can get back to the beginning of the same Formation of a closed, endless weld. Thereby, that according to the invention the weld seam sections of the individual Only cut circulation, but not overlay or touch, there will be an accumulation of energy at each Avoided welding spot. The result is that the invention trained welds not the flattened surface or not significantly affect, so that no post-processing requires or at least no significant post-processing is required.

Gemäß einer bevorzugten Ausgestaltung der Erfindung erfolgen alle Umläufe um einen gemeinsamen Mittelpunkt. Dabei ändert sich bei mindestens einem Teil eines Umlaufs der Radius der Schweißnaht kontinuierlich, so dass er die Schweißnaht wenigstens teilweise spiralförmig umläuft. Dadurch kann eine Deckung bzw. Überlappung der Schweißnahtabschnitte unterschiedlicher Umläufe verhindert werden, so dass die durch die einzelnen Umläufe gebildeten ringförmigen Teile der Schweißnähte mindestens teilweise, vorzugsweise größtenteils nebeneinanderliegen und streckenweise parallel zueinander verlaufen.According to a preferred embodiment of the invention all orbits around a common center. It changes the radius of at least part of a revolution Weld continuously so that it welds at least partially revolves in a spiral. This can cause a Coverage or overlap of the weld seam sections of different Circulations are prevented, so that by the individual Circulations formed annular parts of the welds are at least partially, preferably largely adjacent to one another and sometimes run parallel to each other.

Weitere Unteransprüche betreffen konkrete Ausgestaltungen des Verlaufs der Schweißnaht der einzelnen Schweißstellen.Further subclaims relate to specific configurations of the Course of the weld of the individual welds.

Ein bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Muldenmangel wird nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:

Fig. 1
einen schematischen Längsschnitt durch eine Muldenmangel,
Fig. 2
einen Querschnitt durch eine Mangelmulde mit einer andeutungsweise dargestellten Mangelwalze,
Fig. 3
eine Ansicht auf einen Eckbereich der Mangelmulde von außen,
Fig. 4
eine vergrößerte Einzelheit IV aus der Fig. 3 im Bereich einer Schweißstelle,
Fig. 5
einen ersten Umlauf einer Schweißnaht der Schweißstelle der Fig. 4,
Fig. 6
einen zweiten Umlauf der Schweißnaht der Schweißstelle der Fig. 4, und
Fig. 7
einen dritten Umlauf der Schweißnaht der Schweißstelle der Fig. 4.
A preferred embodiment of the trough lack according to the invention is explained in more detail below with reference to the drawing. In this show:
Fig. 1
a schematic longitudinal section through a trough lack,
Fig. 2
a cross section through a mangle trough with a mangle roller shown hinted,
Fig. 3
a view of a corner area of the ironer from outside,
Fig. 4
3 shows an enlarged detail IV from FIG. 3 in the area of a welding point,
Fig. 5
a first revolution of a weld seam of the welding point of FIG. 4,
Fig. 6
a second revolution of the weld of the weld of Fig. 4, and
Fig. 7
a third revolution of the weld of the weld of FIG. 4th

Die Fig. 1 zeigt ein Beispiel einer Muldenmangel gemäß der Erfindung. Die gezeigte Muldenmangel verfügt über zwei mit Abstand hintereinanderliegende Mangelmulden 10 und 11, zwei jeder Mangelmulde 10 und 11 zugeordnete Mangelwalzen 12 und 13 und eine Brücke 14 zwischen den mit Abstand aufeinanderfolgenden Mangelmulden 10 und 11. Die Muldenmangel verfügt außerdem über ein Untergestell 15, das die beiden Mangelmulden 10 und 11 trägt. Die Erfindung eignet sich aber auch für Muldenmangeln die mehr als zwei Mangelmulden 10, 11 und Mangelwalzen 12, 13 aufweisen oder nur über eine einzige Mangelmulde 10 und Mangelwalze 12 verfügen. Im letztgenannten Falle verfügt die Muldenmangel über keine Brücke 14.Fig. 1 shows an example of a trough lack according to the Invention. The shown trough lack has two with Distance between the shortages 10 and 11, two each ironer 10 and 11 associated ironer rollers 12 and 13th and a bridge 14 between the successive ones at a distance Deficiency troughs 10 and 11. The trough lack has also via a base frame 15, which the two shortages 10 and 11 carries. The invention is also suitable for Trough ironers the more than two ironer troughs 10, 11 and ironer rollers 12, 13 or only through a single defect trough 10 and ironing roller 12 have. In the latter case the trough lack over no bridge 14.

Die beiden im gezeigten Ausführungsbeispiel vorzugsweise gleich ausgebildeten Mangelwalzen 12 und 13 weisen eine zylindrische Gestalt auf. Sie sind um jeweils eine mittige Drehachse 16 und 17 kontinuierlich drehend antreibbar. Der äußere Zylindermantel jeder Mangelwalze 12 und 13 ist mit einer in den Figuren nicht gezeigten Bewicklung versehen.The two in the embodiment shown are preferably the same trained ironing rollers 12 and 13 have a cylindrical Shape up. They are each about a central axis of rotation 16 and 17 continuously rotatable. The outer cylinder jacket each ironer roller 12 and 13 is not with one in the figures provided wrapping shown.

Die in der Regel gleich ausgebildeten Mangelmulden 10 und 11 verfügen über einen etwa halbkreisförmigen Querschnitt. Die Mangelmulden 10 und 11 umgeben dadurch im wesentlichen die untere Hälfte jeder Mangelwalze 12 und 13 (Fig. 1 und 2). Eine gewölbte Innenseite jeder Mangelmulde 10 und 11 bildet eine glatte Plättfläche 18 und 19. Zwischen der Plättfläche 18 und 19 jeder Mangelmulde 10 und 11 und der von der Bewicklung gebildeten Mantelfläche jeder Mangelwalze 12 und 13 sind in den Figuren nicht gezeigte textile Gegenstände, insbesondere Wäschestücke, durch die Muldenmangel hindurchbewegbar. Dazu befindet sich zwischen jeder Mangelmulde 10 bzw. 11 und der dazugehörenden Mangelwalze 12 und 13 ein in den Figuren zur besseren Erkennbarkeit in vergrößerter Breite dargestellter, etwa halbkreisförmiger Walzenspalt 39. Dort, wo sich zwischen der jeweiligen Mangelwalze 12 bzw. 13 und der Mangelmulde 10 bzw. 11 momentan kein Wäschestück befindet, liegt die elastische Bewicklung der Mangelwalze 12 bzw. 13 an der glatten Plättfläche 18 und 19 der jeweiligen Mangelmulde 10 und 11 an.The deficiency troughs 10 and 11, which are generally of the same design have an approximately semicircular cross section. The Deficiency troughs 10 and 11 essentially surround the lower half of each ironer roller 12 and 13 (Fig. 1 and 2). A domed inside of each trough 10 and 11 forms one smooth plate surface 18 and 19. Between the plate surface 18 and 19 each trough 10 and 11 and the winding formed lateral surface of each ironing roller 12 and 13 are in the Figures not shown textile objects, in particular Items of laundry that can be moved through the trough. To is between each trough 10 or 11 and the associated ironer roller 12 and 13 in the figures better visibility in an enlarged width, approximately semicircular nip 39. Wherever between the respective ironer roller 12 or 13 and the ironer 10 or 11 there is no laundry item at the moment elastic winding of the ironer roller 12 or 13 on the smooth Flat surface 18 and 19 of the respective trough 10 and 11.

Die Mangelmulden 10 und 11 sind elastisch und doppelwandig ausgebildet. Die Wandungen der Mangelmulden 10 und 11 sind aus dünnen, elastischen Platten bzw. Blechen gebildet. Die Platten bzw. Bleche bestehen aus Stahl, und zwar vorzugsweise Edelstahl, insbesondere nicht-rostendem Edelstahl. Durch die doppelwandige Ausbildung der Mangelmulden 10 und 11 sind im Inneren derselben Hohlräume vorhanden. Durch die Hohlräume der Mangelmulden 10 und 11 ist ein unter Druck stehendes Wärmeträgermedium hindurchleitbar. Das Wärmeträgermedium dient zum Beheizen der Mangelmulden 10 und 11. Es handelt sich hierbei um ein erhitztes Fluid, insbesondere Dampf. Anschlüsse zum Zuführen des Wärmeträgermediums zu den Mangelmulden 10 und 11 und zum Ableiten des Wärmeträgermediums sind aus Vereinfachungsgründen in den Figuren nicht dargestellt.The troughs 10 and 11 are elastic and double-walled. The walls of the troughs 10 and 11 are made thin, elastic plates or sheets formed. The plates or sheets are made of steel, preferably stainless steel, especially stainless steel. Through the double-walled design of the troughs 10 and 11 are in Inside the same cavities. Through the cavities of the Lack troughs 10 and 11 is a pressurized heat transfer medium hindurchleitbar. The heat transfer medium is used for Heating of the troughs 10 and 11. These are a heated fluid, especially steam. Connections to Feeding the heat transfer medium to the mangle troughs 10 and 11 and for removing the heat transfer medium are for reasons of simplification not shown in the figures.

Die größtenteils voneinander beabstandeten, gewölbten Bleche zur Bildung der Mangelmulden 10 und 11 sind bei der hier gezeigten Muldenmangel unterschiedlich dick ausgebildet. Ein die Plättflächen 18 und 19 bildendes inneres Blech 20 ist dicker ausgebildet als ein äußeres Blech 21. Die Blechdicken für das dickere, innere Blech 20 können im Bereich zwischen 3 mm und 6 mm liegen. Vorzugsweise beträgt die Dicke des inneren Blechs 20 etwa 4 mm. Die Dicken des dünneren, äußeren Blechs 21 können im Bereich zwischen 0,5 mm und 3 mm liegen. Insbesondere beträgt die Dicke des äußeren Blechs 21 etwa 1,5 mm. Das Dickenverhältnis zwischen dem inneren Blech 20 und dem äußeren Blech 21 liegt im Bereich von 2 bis 3,5. Es ist auch denkbar, das innere und das äußere Blech 20, 21 mit etwa gleicher Dicke zu versehen. Die Bleche 20 und 21 verfügen dann über Dicken im Bereich zwischen 2 mm und 5 mm, insbesondere 3 mm bis 4 mm.The mostly spaced, curved sheets for the formation of the shortages 10 and 11 are in the here shown trough lack of different thickness. On the plate surfaces 18 and 19 forming inner sheet 20 formed thicker than an outer sheet 21. The sheet thicknesses for the thicker, inner sheet 20 can range between 3 mm and 6 mm. The thickness of the inner sheet 20 about 4 mm. The thicknesses of the thinner, outer Sheet 21 can be in the range between 0.5 mm and 3 mm. In particular, the thickness of the outer sheet 21 is approximately 1.5 mm. The thickness ratio between the inner sheet 20 and the outer sheet 21 is in the range of 2 to 3.5. It is also conceivable, the inner and outer sheets 20, 21 with about to be of the same thickness. The sheets 20 and 21 then have about thicknesses in the range between 2 mm and 5 mm, in particular 3 mm to 4 mm.

Beide Bleche 20 und 21 zur Bildung der jeweiligen Mangelmulde 10 bzw. 11 sind an ihren Rändern ringsherum miteinander verbunden, vorzugsweise verschweißt, und zwar insbesondere durch Laserschweißen. Dadurch sind die Hohlräume 22 und 23 zwischen den Blechen 20 und 21 jeder Mangelmulde 10, 11 fluiddicht. Die Bleche 20, 21 jeder Mangelmulde 10 und 11 sind zusätzlich miteinander verbunden durch auf die Fläche insbesondere des jeweiligen äußeren Blechs 21 gleichmäßig rasterartig verteilte Schweißstellen 24. Die Schweißstellen 24 sind im gezeigten Ausführungsbeispiel allesamt gleich ausgebildet. Durch die Schweißstellen 24 sind die Bleche 20 und 21 der Mangelmulden 10 und 11 bereichsweise miteinander verbunden.Both sheets 20 and 21 to form the respective lack trough 10 and 11 are connected together at their edges, preferably welded, in particular by Laser welding. As a result, the cavities 22 and 23 are between the sheets 20 and 21 of each trough 10, 11 fluid-tight. The Sheets 20, 21 of each trough 10 and 11 are also together connected by on the area in particular the respective outer sheet 21 evenly distributed in a grid pattern Welding points 24. The welding points 24 are in the exemplary embodiment shown all trained equally. Through the Welds 24 are the sheets 20 and 21 of the troughs 10 and 11 connected to each other in some areas.

Die Schweißstellen 24 sind in mehreren parallelen Reihen mit jeweils gleichen Abständen hintereinander angeordnet. Die Schweißstellen 24 benachbarter Reihen sind versetzt zueinander, und zwar vorzugsweise um den halben Abstand jeweils zweier aufeinanderfolgender Schweißstellen 24 in einer Reihe. Dadurch liegen die Schweißstellen 24 benachbarter Reihen auf Lücke. Die Abstände benachbarter, vorzugsweise horizontaler Reihen sind so gewählt, dass die Abstände benachbarter Schweißstellen 24 in der jeweiligen Reihe etwa genau so groß sind wie die diagonalen Abstände der auf Lücke liegenden Schweißstellen 24 benachbarter Reihen (Fig. 3).The welds 24 are in several parallel rows the same distances in a row. The Welds 24 of adjacent rows are offset from one another, and preferably by half the distance between two successive ones Welds 24 in a row. Thereby are the welds 24 of adjacent rows on a gap. The Distances between adjacent, preferably horizontal rows are like this chosen that the distances between adjacent welds 24 in of the respective row are about the same size as the diagonal Distances of the welds 24 lying on the gap between adjacent ones Rows (Fig. 3).

Die die Schweißstellen 24 umgebenden Bereiche des äußeren Blechs 21 jeder Mangelmulde 10 und 11 sind vom inneren Blech 20 beabstandet. Dieses kann durch eine hydraulische Verformung nur des äußeren Blechs 21 erfolgen. Das innere Blech 20 jeder Mangelmulde 10 und 11 ist hingegen auch außerhalb der Bereiche der Schweißstellen 24 unverformt. Durch das Verformen, nämlich Aufweiten, des äußeren Blechs 21 jeder Mangelmulde 10 und 11 kommen die Hohlräume in der doppelwandigen Mangelmulde 10 und 11 zustande. Dadurch, dass die Hohlräume die Schweißstellen 24 umgeben, entstehen im Inneren der Mangelmulden 10 und 11 Strömungswege, die dazu dienen, das Wärmeträgermedium, insbesondere Heizmedium, wie zum Beispiel Wasserdampf, gleichmäßig durch die Strömungswege jeder Mangelmulde 10 bzw. 11 hindurchzuleiten.The areas of the outer area surrounding the welds 24 Sheet 21 of each trough 10 and 11 are from the inner sheet 20th spaced. This can only be achieved through hydraulic deformation of the outer sheet 21. The inner sheet 20 each Deficiency trough 10 and 11, however, is also outside the areas the welds 24 undeformed. By deforming, namely Widen the outer sheet 21 of each trough 10 and 11th the cavities come in the double-walled trough 10 and 11. The fact that the cavities 24 surrounded, arise in the interior of the troughs 10 and 11 Flow paths that serve the heat transfer medium, in particular Heating medium, such as water vapor, evenly to pass through the flow paths of each ironer 10 or 11.

Die Brücke 14 ist ebenfalls halbkreisförmig gewölbt und flexibel. Die Brücke 14 kann wie die Mangelmulden 10 und 11 gebildet sein. Dann ist ein oberes Blech derselben wie das innere Blech 20 der Mangelmulden 10 und 11 glatt ausgebildet. Über die obere Außenseite des glatten oberen Blechs der Brücke 14 werden die Wäschestücke von der ersten Mangelwalze 12 zur zweiten Mangelwalze 13 geleitet. The bridge 14 is also semicircular and curved flexible. The bridge 14 can, like the troughs 10 and 11 be educated. Then an upper sheet is the same as that inner sheet 20 of the troughs 10 and 11 formed smooth. Over the top outside of the smooth top sheet of the bridge 14 the laundry items from the first ironing roller 12 to second mangle roller 13 passed.

Jede Mangelmulde 10 und 11 ist mit ihren gegenüberliegenden, parallel zu den Drehachsen 16 und 17 der Mangelwalzen 12 und 13 verlaufenden Längsseitenrändern 26, 27, 28, 29 am Untergestell der Muldenmangel gelagert. Zu diesem Zweck ist jeder Mangelmulde 10 und 11 an einem Längsseitenrand 26, 28 ein festes Lager und an den übrigen, gegenüberliegenden Längsseitenrändern 27, 29 jeweils ein bewegliches Lager zugeordnet. Die beweglichen Lager der Längsseitenränder 27 und 29 sind als Pendelstützen 30, 31 ausgebildet. Vorzugsweise ist jedem Längsseitenrand 27 und 29 eine über die gesamte Länge desselben durchgehende Pendelstütze 30, 31 zugeordnet. Die Pendelstützen 30 und 31 verlaufen leicht geneigt zur Vertikalen, und zwar derart, dass ihre oberen Enden 32 zur jeweiligen Mangelwalze 12 bzw. 13 weisen.Each trough 10 and 11 is with its opposite, parallel to the axes of rotation 16 and 17 of the ironing rolls 12 and 13 running longitudinal side edges 26, 27, 28, 29 on the base the trough lack stored. For this purpose, everyone is lacking 10 and 11 on a longitudinal side edge 26, 28 a fixed Bearing and on the other, opposite longitudinal side edges 27, 29 each assigned a movable bearing. The moveable Bearings of the longitudinal side edges 27 and 29 are as pendulum supports 30, 31 formed. Each long edge is preferably 27 and 29 a continuous over the entire length of the same Pendulum support 30, 31 assigned. The pendulum supports 30 and 31 are slightly inclined to the vertical, in such a way that their upper ends 32 to the respective ironing roller 12 or 13 point.

In besonderer Weise sind die untereinander gleichen Schweißstellen 24 ausgebildet. Alle Schweißstellen 24 werden vorzugsweise durch Laserschweißen oder ein vergleichbares Schweißverfahren, beispielsweise Plasmaschweißen, gebildet. Die Fig. 4 bis 7 zeigen vergrößert eine der Schweißstellen 24. Demnach ist jede Schweißstelle 24 durch eine mehrfach ringförmig umlaufende, endlose Schweißnaht, vorzugsweise Laserschweißnaht, gebildet. Die Schweißstelle 24 ist dadurch ringförmig, und zwar genauer gesagt mehrfach ringförmig, ausgebildet.In particular, the welding points are the same as one another 24 trained. All welds 24 are preferred by laser welding or a comparable welding process, for example, plasma welding. 4 to 7 show one of the welds 24 enlarged each weld 24 by a multiple ring all-round, endless weld seam, preferably laser weld seam, educated. The weld 24 is thereby ring-shaped, namely more specifically, multiple rings, trained.

Die im vorliegenden Ausführungsbeispiel gezeigte Schweißstelle 24 verfügt über eine dreimal umlaufende Schweißnaht. Die Schweißnaht setzt sich demnach aus drei Umläufen 33, 34 und 35 von jeweils 360° zusammen. Die Schweißnaht beginnt beim ersten Umlauf 33 an einer Stelle 36. Die Schweißnaht endet am Schluß des dritten Umlaufs 35 ebenfalls an der Stelle 36. Dadurch ist die mehrfach umlaufende Schweißnaht endlos. Die Abschnitte der Schweißnaht jedes Umlaufs 33, 34 und 35 liegen im wesentlichen mit Abstand nebeneinander, so dass sich die Schweißnahtabschnitte der unterschiedlichen Umläufe 33, 34 und 35 nicht überlagern. Im gezeigten Ausführungsbeispiel kreuzt sich die Schweißnaht lediglich in einem Kreuzungspunkt 37 des zweiten Umlaufs 34 und des dritten Umlaufs 35. Darüber hinaus berühren sich die Abschnitte der Schweißnaht am Ende des ersten Umlaufs 33, am Beginn des zweiten Umlaufs 34 und am Ende des dritten Umlaufs 35 an der Stelle 36.The welding point shown in the present exemplary embodiment 24 has a weld seam that runs three times. The The weld seam therefore consists of three revolutions 33, 34 and 35 of 360 ° together. The weld begins at the first Circulation 33 at a point 36. The weld seam ends at the end of the third round 35 also at point 36 the multiple circumferential weld seam is endless. The sections of the Weld of each revolution 33, 34 and 35 are essentially spaced side by side so that the weld seam sections the different rounds 33, 34 and 35 not overlap. In the exemplary embodiment shown, the crosses Weld seam only at a crossing point 37 of the second Circuit 34 and the third circuit 35. Also touch the sections of the weld at the end of the first round 33, at the beginning of the second round 34 and at the end of the third Orbit 35 at location 36.

Die Radien aller drei Umläufe 33, 34 und 35 der Schweißnaht liegen auf einem gemeinsamen Mittelpunkt 38. Der erste Umlauf 33 der Schweißnaht ist kreisförmig mit dem Radius R1 um den Mittelpunkt 38. Der Umlauf 33 beginnt und endet demnach an der Stelle 36. Von der Stelle 36 geht der zweite Umlauf 34 aus mit einem sich über den halben Umlauf (180°) ständig, insbesondere kontinuierlich, zunehmenden Radius, und zwar vom Radius R1 bis zum größeren Radius R2 (Fig. 6). Dieser Bereich der Schweißnaht verläuft dadurch spiralartig. Im Anschluß daran verläuft die Schweißnaht über die zweite Hälfte (180°) des zweiten Umlaufs 34 halbkreisförmig mit konstantem Radius R2, der ebenfalls vom Mittelpunkt 38 ausgeht (Fig. 6). Der zweite Umlauf 34 wird fortgesetzt vom dritten Umlauf 35. Der Umlauf 35 verfügt über einen sich ständig ändernden Radius, der auch vom Mittelpunkt 38 ausgeht. Vom Radius R2 am Beginn des dritten Umlaufs 35 wird über die Hälfte des Umlaufs (180°) der Radius stetig größer, erweitert sich nämlich spiralartig bis zum Radius R3. Während der zweiten Hälfte (180°) wird der Radius des Umlaufs 35 stetig kleiner, verringert sich nämlich vom Radius R3 spiralartig zum Radius R1. Dadurch endet der dritte Umlauf 35 am Beginn und am Ende des ersten Umlaufs 33, und zwar an der Stelle 36 (Fig. 7). Alternativ ist es denkbar, dass der dritte Umlauf 35 im Bereich seines ersten Vierteils (90°) entlang einer Viertelkreisbahn mit dem Radius R2 verläuft. Die spiralförmige Aufweitung des Umlaufs 35 vom Radius R2 zum größeren Radius R3 erfolgt dann nur über den zweiten Viertelkreisbereich (90°). Daran schließt wiederum die zweite Hälfte des Umlaufs 35 an, entlang derer sich der Umlauf 35 spiralförmig vom Radius R3 zum Radius R1 verkleinert.The radii of all three revolutions 33, 34 and 35 of the weld seam lie on a common center 38. The first revolution 33 of the weld seam is circular with the radius R 1 around the center 38. The revolution 33 therefore begins and ends at point 36 the point 36 starts the second revolution 34 with a radius that increases continuously, in particular continuously, over half the revolution (180 °), namely from the radius R 1 to the larger radius R 2 (FIG. 6). This area of the weld seam runs in a spiral. The weld seam then runs over the second half (180 °) of the second circulation 34 in a semicircle with a constant radius R 2 , which also starts from the center 38 (FIG. 6). The second revolution 34 is continued by the third revolution 35. The revolution 35 has a constantly changing radius, which also starts from the center 38. The radius of the radius R 2 at the beginning of the third revolution 35 increases steadily over half of the revolution (180 °), namely extends in a spiral fashion up to the radius R 3 . During the second half (180 °), the radius of the revolution 35 becomes smaller and smaller, namely decreases from the radius R 3 in a spiral manner to the radius R 1 . As a result, the third round 35 ends at the beginning and at the end of the first round 33, specifically at point 36 (FIG. 7). Alternatively, it is conceivable that the third circulation 35 runs in the region of its first four part (90 °) along a quarter circular path with the radius R 2 . The spiral widening of the circulation 35 from the radius R 2 to the larger radius R 3 then takes place only over the second quarter circle region (90 °). This is followed by the second half of the circulation 35, along which the circulation 35 decreases in a spiral from the radius R 3 to the radius R 1 .

Das Verhältnis der Radien R2 zu R1 liegt im Bereich von 1,2 bis 1,8, beträgt insbesondere etwa 1,5. Das Verhältnis der Radien R3 zu R1 liegt im Bereich von 1,7 bis 2,3, beträgt insbesondere etwa 2. The ratio of the radii R 2 to R 1 is in the range from 1.2 to 1.8, in particular is approximately 1.5. The ratio of the radii R 3 to R 1 is in the range from 1.7 to 2.3, in particular is approximately 2.

Abweichend vom gezeigten Ausführungsbeispiel können die Schweißstellen 24 Schweißnähte mit mehr oder weniger als drei Umläufen 33, 34, 35 aufweisen. Die Abmessungen und geometrischen Gestaltungen (Verläufe) der Umläufe können auch vom gezeigten Ausführungsbeispiel abweichen. Vorzugsweise sind bei anders gestalteten Schweißstellen 24 die Schweißnähte stets endlos, enden also an derjenigen Stelle, an der sie begonnen haben. Weiterhin sind abweichende Gestaltungen der Schweißstellen 24 so auszubilden, dass die Schweißnähte größtenteils direkt oder mit Abstand nebeneinanderliegen. Dabei kann es gegebenenfalls auch zu mehreren Kreuzungspunkten kommen. Insbesondere können die Verläufe der Schweißnähte der Schweißstellen 24 hinsichtlich der Aufeinanderfolge kreisförmiger oder teilkreisförmiger Abschnitte und spiralförmiger Abschnitte variieren. Gegebenenfalls kann die Shweißnaht jeder Schweißstelle 24 ausschließlich aus spiralförmig verlaufenden Umläufen gebildet sein. Schließlich ist es auch denkbar, die Schweißnaht jeder Schweißstelle durch mehrere Kreise gleicher oder unterschiedlicher Radien zu bilden, wobei die Mittelpunkte der Kreise ungleich sind, das heißt an verschiedenen Stellen nebeneinanderliegen. Deviating from the embodiment shown, the Welds 24 welds with more or less than three Have revolutions 33, 34, 35. The dimensions and geometric Designs (courses) of the circulation can also from shown embodiment differ. Preferably at differently designed welds 24 always the welds endless, so they end where they started to have. Furthermore, there are different designs of the welding points 24 trained so that the welds mostly lying next to each other or at a distance. It can possibly also come to several crossing points. In particular can the course of the welds of the welds 24 circular or sequential part circular sections and spiral sections vary. If necessary, the weld seam can be any weld 24 exclusively from spiral runs be educated. Finally, it is also conceivable for the weld each welding point by several circles of the same or different To form radii, with the centers of the Circles are unequal, that is, in different places are adjacent.

Bezugszeichenliste: Reference symbol list :

1010
Mangelmuldemangle trough
1111
Mangelmuldemangle trough
1212
Mangelwalzemangle roll
1313
Mangelwalzemangle roll
1414
Brückebridge
1515
Untergestellundercarriage
1616
Drehachseaxis of rotation
1717
Drehachseaxis of rotation
1818
PlättflächePlättfläche
1919
PlättflächePlättfläche
2020
inneres Blechinner sheet
2121
äußeres Blechouter sheet
2222
Hohlraumcavity
2323
Hohlraumcavity
2424
Schweißstelleweld
2525
oberes Blechtop sheet
2626
LängsseitenrandLongitudinal side edge
2727
LängsseitenrandLongitudinal side edge
2828
LängsseitenrandLongitudinal side edge
2929
LängsseitenrandLongitudinal side edge
3030
PendelstützeStabilizer
3131
PendelstützeStabilizer
3232
oberes Endetop end
3333
Umlaufcirculation
3434
Umlaufcirculation
3535
Umlaufcirculation
3636
StelleJob
3737
Kreuzungspunktintersection
3838
MittelpunktFocus
3939
Walzenspaltnip

Claims (10)

  1. A trough mangle having at least one mangle roll (12, 13), and at least one double-walled, flexible mangle trough (10, 11) surrounding a part of the circumference of each mangle roll (12, 13), with sheet-metals being welded together for forming the walls of each mangle trough (10, 11) by edge-side welding seams and welding locations (24) on the surface of at least one of the walls, characterized in that said welding locations (24) are formed by circumferential welding seams.
  2. The trough mangle according to claim 1, characterized in that said welding seams for forming said welding locations (24) are endless.
  3. The trough mangle according to claim 1 or 2, characterized in that said welding locations (24) have welding seams running around several times, with the welding seams of the welding locations (24) preferably ending at about the same point (36) from which they start.
  4. The trough mangle according to any one of the preceding claims, characterized in that said welding seams of the welding locations (24) run around completely several times, preferably three times, with the welding seam of each welding location (24) preferably starting with a first turn (33) at point (36), where the welding seam ends with the last turn (35).
  5. The trough mangle according to any one of the preceding claims, characterized in that said welding seam of the welding location (24) running around completely several times, only intersects at at least one crossover point (37), and the individual turns (33, 34, 35) of the welding location (24) in other respects do not overlay and/or touch.
  6. The trough mangle according to any one of the preceding claims, characterized in that said welding seam for forming each welding location (24) extends at least in parts in a circular and/or spiral shape.
  7. The trough mangle according to any one of the preceding claims, characterized in that the radius of the welding seam of each welding location (24) in at least one part of a turn (34, 35) is changed continuously, preferably in spiral-like manner.
  8. The trough mangle according to any one of the preceding claims, characterized in that said welding seam of each welding location (24), in at least one turn (34, 35) in parts has a constant radius, and in parts a continuously (spirally) changing radius.
  9. The trough mangle according to any one of the preceding claims, characterized in that in one turn (33) of the welding seam, the radius thereof is not changed, in another turn (34), the radius only in parts is changed continuously and/or in yet another turn (35) the radius as a whole is continuously changed.
  10. The trough mangle according to any one of the preceding claims, characterized in that said welding seam extends in a first turn (33) in a circular shape having a constant radius, in a second turn (34) the radius firstly is continuously (spirally) increased, preferably along half a turn (34) and remains unchanged over the remaining part of the turn (34), and in the third turn (35) the radius firstly is spirally increased over at least a part of said turn (35), and is subsequently continuously (spirally) decreased to the radius of the first (circular) turn (33).
EP01101708A 2000-01-25 2001-01-25 Trough mangle Expired - Fee Related EP1120488B1 (en)

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BE1018731A5 (en) * 2009-04-24 2011-07-05 Lapauw Internat Nv METHOD FOR MANUFACTURING A STEAM OR LIQUID HEATING TANK FOR A IRONING EQUIPMENT, A STEAM OR LIQUID HEATING TANK AND AN IRON PROVIDED WITH SUCH A TANK.
BE1020132A5 (en) * 2011-08-05 2013-05-07 Laco Machinery N V FAIRER FOR IRONING.
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Publication number Priority date Publication date Assignee Title
GB873881A (en) * 1959-01-12 1961-08-02 Emile D Hooge S P R L Atel Con Ironing machines
BE1005950A3 (en) * 1992-06-05 1994-03-15 Lapauw Romain INDUSTRIAL IRONING MACHINE AND THE METHOD OF MANUFACTURING A TUB IN SUCH AN IRONING MACHINE.

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DE50100809D1 (en) 2003-11-27
DK1120488T3 (en) 2004-03-01
EP1120488A3 (en) 2002-07-17
EP1120488A2 (en) 2001-08-01

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