EP2388370B1 - Undercovering of a mangle roller - Google Patents

Undercovering of a mangle roller Download PDF

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Publication number
EP2388370B1
EP2388370B1 EP11002272.0A EP11002272A EP2388370B1 EP 2388370 B1 EP2388370 B1 EP 2388370B1 EP 11002272 A EP11002272 A EP 11002272A EP 2388370 B1 EP2388370 B1 EP 2388370B1
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EP
European Patent Office
Prior art keywords
spring
springs
webbing
mangle
steel
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EP11002272.0A
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German (de)
French (fr)
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EP2388370A2 (en
EP2388370A3 (en
Inventor
Wilhelm Bringewatt
Engelbert Heinz
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Herbert Kannegiesser GmbH and Co
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Herbert Kannegiesser GmbH and Co
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Publication of EP2388370A2 publication Critical patent/EP2388370A2/en
Publication of EP2388370A3 publication Critical patent/EP2388370A3/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F83/00—Coverings or pads for ironing or pressing members

Definitions

  • the invention relates to a Unterbewicklung for a mangle roller according to the preamble of claim 1.
  • Trough mangles especially for commercial laundries, have a rotating drivable mangle roller, which is provided on the outer circumference with a winding.
  • the winding is formed of a Unterbewicklung (also called “feathering”) with a wrapped around the mangle roller webbing and a plurality of lamellar successively attached to the webbing springs (also called “lamellar springs”) and a Oberbewicklung of a textile material. With the textile Oberbewicklung comes to be smoothed laundry in touch.
  • the springs of Unterbewicklung serve to form the coat of mangle roll to compensate for bumps feathers.
  • the EP 0 736 627 A1 discloses a Unterbewicklung of coil springs and continuous plate-like elements. Both the coil springs and the plate-like elements are made of stainless steel.
  • the GB 650 212 A discloses a spring base that is similar to the prior art described above. Material specifications for the springs and the webbing are not apparent from this document.
  • the present invention seeks to provide a Unterbewicklung having optimal material properties, is simple and has a relatively long life.
  • a Unterbewicklung to solve the problem has the features of claim 1. Accordingly, it is intended to form the springs of a stainless steel with spring steel-like properties, while the strap is made of carbon steel. This can be so-called black steel. As a result, the springs and the webbing have optimal material properties.
  • the webbing is therefore made of carbon steel, because it is usually made from the mangle roll, so that in the hot state of the mangle roller corresponds to the thermal expansion of the webbing that of the mangle roll.
  • the springs are made of stainless steel, because this is not only resilient by the alloy components, but also highly resilient.
  • the springs of stainless steel are formed of stainless steel, while the webbing is made of galvanized, unalloyed steel. Because, above all, the springs are not only exposed to moisture but also residues of chemical additives still contained in the laundry, springs made of stainless steel are particularly resistant.
  • the webbing is galvanized, which is sufficient so that it does not rust and thereby affect the laundry to be smoothed.
  • the springs with the strap or alternatively or optionally also to be welded.
  • the welding is preferably carried out by spot welding.
  • the riveting can be done for example by hollow rivets. Particularly suitable is the riveting for connecting the springs with the webbing, because both consist of different materials.
  • the in the Fig. 1 and 2 Mangle roller 10 shown is part of a tray deficiency for smoothing laundry. Trough mangles of this type are preferably used in commercial laundries.
  • Approximately the lower half of the mangle roller 10 is surrounded by a not shown in the figures, heatable mangle trough. Between the mangle trough and the mangle roll 10, a narrow mangle gap is formed, through which the mangle roll 10, which can be driven in rotation about its usually horizontal longitudinal center axis 16, transports the piece of linen to be smoothed.
  • a cylindrical outer surface 11 of the ironer roller 10 is surrounded by a winding 12.
  • the winding 12 is composed of a wound around the cladding 11 helically underwound 13, which is also referred to as feathering, and an outer Oberbewicklung 14 of a usually textile material.
  • the Oberbewicklung 14 surrounds and covers the Unterbewicklung 13th
  • the Oberbewicklung 14 supporting Unterbewicklung 13 is resilient.
  • the sub-winding 13 is formed from a plurality of identical springs 15.
  • these springs 15, which are lined up in close succession, ie lamellar, are arranged around the ironer roller 10 (FIG. Fig. 4 ), called “lamellar springs”.
  • the underwinding 13 has, in addition to the springs 15, a strip-shaped carrier, which in the exemplary embodiment shown is a strap 17.
  • the webbing 17 has the width of each of a spring 15 and has a relatively thin wall thickness, so that it is sufficiently flexible to be wound around the circumferential surface 11 of the mangle roller 10 helically around ( Fig. 2 ). The entire lateral surface 11 of the ironer roller 10 is thereby completely covered by the helically wound around the same webbing 17.
  • the springs 15 are preferably fixedly connected to the webbing 17. As a result, after wrapping of the webbing 17 about the lateral surface 11, the entire mangle drum 10 is covered gaplessly by circumferentially successive and longitudinally juxtaposed springs 15 (FIG. Fig. 2 ).
  • the FIGS. 5 and 6 show a single spring 15.
  • the spring 15 is integrally formed. It is composed of a transverse to the winding direction of the webbing 17 to the ironer roller 10 extending spring base 18, also extending transversely to the winding direction spring head 19 and disposed between the spring socket 18 and the spring head 19 and connecting them spring bar 20.
  • unloaded spring 15 are the spring head 19 and the spring base 18 in two spaced, parallel planes, while the spring bar 20 extends obliquely between the two.
  • the spring head 19 and the spring base 18 have approximately rectangular base surfaces, wherein the spring head 19 seen in the winding direction is longer than the spring base 18.
  • the spring base 18 and the spring head 19 have the same width.
  • the spring head 19 a plurality opposite a top 21 of the spring upwardly projecting hooks 22 are provided.
  • the spring head 19 six identical hooks 22, which are grouped in two parallel, transversely to the winding direction extending rows of three hooks 22. The number and arrangement of the hooks 22 may differ from the embodiment shown.
  • the hooks 22 are used to attach the Oberbewicklung 14 on the spring head 19 of the respective spring 15.
  • the hooks 22 are punched out of the spring head 19. In this case, round openings 23 are punched into the spring head 19 in front of the free end of the hook, which delimit the end of the punched holes for the hooks 22.
  • two circular openings 24 are located in spring base 18. These can also be punched, for example.
  • the spring bar 20 is formed. It is waisted to its central region, whereby the narrowest point of the spring bar 20 is in its central region between the spring head 19 and the spring base 18 ( Fig. 6 ).
  • the spring bar 20 is bounded by opposite longitudinal edges 26. Both longitudinal edges 26 have a same course. Accordingly, the spring bar 20 is symmetrical with respect to a longitudinal center axis 25 extending in the winding direction of the lower roll 13 around the ironer roller 10. At each point of the longitudinal central axis 25, the opposite longitudinal edges 26 of the spring bar 20 are equidistant from the longitudinal central axis 25.
  • the sidecut and the course of the longitudinal edges 26 of the spring bar 20 come about by two differently sized radii 27 and 28 and a straight line 29.
  • the larger radius 27 starts from the spring base 18, while the smaller radius 28 from the spring head 19.
  • Approximately in the middle of the spring bar 20 is the straight line 29 of each longitudinal edge 26.
  • the straight lines 29 of the opposite longitudinal edges 26 are parallel to each other.
  • Each straight line 29 is relatively short.
  • the length of each straight line 29 is only 3 mm to 6 mm, in particular about 4 mm.
  • the radii 27 and 28 pass continuously into the ends of the line 29, namely tangentially ( Fig. 6 ).
  • the outer ends of the radii 27 and 28 also go smoothly into straight, parallel longitudinal edges 30 and 31 of the spring base 18 and the spring head 19, but rounded by smaller radii 32 and 33, the center of which, in contrast to the radii 27 and 28 not outside the surface of the spring 15 is located, but within the surface of the spring 15th
  • the large radius 27 is two to three times as large as the small radius 28.
  • the ratio between the large radius 27 and the small radius 28 is about 2.25 to 2.35.
  • the narrowest point of the waist in the central region of the spring bar 20 is 3/10 to 4/10 of the width of the spring base 18 and the spring head 19, which are the same width in the embodiment shown.
  • the narrowest point of the spring bar 20 is approximately 0.33 to 0.36 times the width of the spring head 19 and of the spring base 18.
  • the lateral offset is based on the total length of the spring 15 about 0.3 to 0.35 times the small radius 28.
  • the running in the direction of the longitudinal center axis 25 distance between the centers of the radii 27 and 28 is in the region of the waist bridged by the straight line 29.
  • the straight lines 29 extend thereby starting from about half the length of the spring 15 to the spring socket 18 back.
  • the spring head 19 is longer than the spring base 18, namely by 2 to 4 times, preferably 2.5 to 3 times the length (in the direction of the longitudinal central axis 25) of the spring socket 18th
  • the height offset of the spring head 19 relative to the spring base 18 is at unloaded spring 15 is about 10 mm to 20 mm, in particular 13 mm to 16 mm. This height offset corresponds approximately to 0.5 to 0.7 times the width of the spring head 19 and the spring base 18. In particular, the height offset of the spring base 18 relative to the spring head 19 is 0.4 to 0.6 times the width the spring base 18 and the spring head 19.
  • the thickness of the sheet for forming the spring 15 is about 0.3 mm to 0.7 mm, in particular, the sheet thickness is about 0.5 mm.
  • the total length of the spring 15 (along the neutral fiber) is 60 mm to 65 mm, while the maximum width is approximately 23 mm to 27 mm, in particular in the region of the spring base 18 and in the region of the spring head 19. As a result, the length-width ratio of the spring 15 is about 2.4 to 2.6, especially 2.5.
  • a gradation 34 which corresponds approximately to the wall thickness of the sheet to form the respective spring 15.
  • the end of the spring head 19 of the adjacent spring 15 on the spring head 19 of the preceding spring 15 ( 3 and 4 ).
  • a gradation 35 is provided at the transition of the spring bar 20 to the spring base 18.
  • a bulge 36 is provided at the end of the gradation 35 pointing away from the spring bar 20, at the end of the gradation 35 pointing away from the spring bar 20, there is a bulge 36 in the upper side 21 of the spring 15.
  • the bulge 36 serves to support adjacent springs 15 when the springs 15 are completely compressed.
  • the bulge 36 extends transversely to the longitudinal central axis 25 of the spring 15th
  • the spring 15 is formed from a sheet of alloyed spring steel.
  • the alloyed spring steel is stainless steel with spring steel-like properties.
  • Particularly preferred stainless steel is used with spring steel-like properties for the spring 15. This may be stainless steel with the material number 1.4310.
  • the Fig. 3 shows the lamellar successive arrangement of a plurality of springs 15 on the webbing 17.
  • the springs 15 are connected to the spring bases 18 with the webbing 17 in such a way that all springs 15 are aligned to the longitudinal direction of the webbing 17, that the longitudinal center axes 25 of all springs 15 lie on the longitudinal center axis of the webbing 17.
  • rivets 39 extend through the openings 24 in the spring socket 18 of each spring 15 and corresponding openings in the webbing 17.
  • the rivets are preferably hollow rivets.
  • each spring 15 with two adjacent rivets 39 which extend through the two apertures 24, secured to the spring base 18 on the webbing 17. It is conceivable to connect each spring 15 alternatively or additionally by welding to the webbing 17 permanently.
  • connection of the springs 15 with the webbing 17 is such that the spring heads 19 adjacent springs 15 partially overlap strip-like ( Fig. 4 ).
  • As a result of about the wall thickness of the spring 15 corresponding gradation 34 run despite the partial overlap the tops 40 of the spring heads 19 at still straight webbing 17 as shown in the Fig. 4 in a common plane, which creates no paragraph on the top of the lower roll 13 and thereby the Oberbewicklung 14 can be applied to the tops 40 of the spring heads 19 of the springs 15 and fixed to the hook 22, without thereby paragraphs in the Oberbewicklung 14 arise.
  • the webbing 17 formed from a sheet metal strip with approximately the thickness of the sheet to form the springs 15 is made of a different material than the springs 15. It is the material of the webbing 17 to simple steel, so-called black steel, in particular unalloyed steel. This rust-prone steel is galvanized.
  • the material of the webbing 17 is the same material from which at least the lateral surface 11 of the mangle roller 10 is formed. Characterized the webbing 17 has the same thermal behavior, in particular the same thermal expansion, as the mangle roller 10th
  • the rivets 39 in particular hollow rivets, for connecting the springs 15 to the webbing 17 may be made of any material.
  • the rivets 39 consist either of the material of the springs 15 or of the material of the webbing 17th

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Body Structure For Vehicles (AREA)

Description

Die Erfindung betrifft eine Unterbewicklung für eine Mangelwalze gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a Unterbewicklung for a mangle roller according to the preamble of claim 1.

Muldenmangeln, insbesondere für gewerbliche Wäschereien, verfügen über eine drehend antreibbare Mangelwalze, die am äußeren Umfang mit einer Bewicklung versehen ist. Die Bewicklung ist gebildet aus einer Unterbewicklung (auch "Befederung" genannt) mit einem um die Mangelwalze herumgelegten Gurtband und einer Vielzahl lamellenartig aufeinanderfolgend am Gurtband befestigten Federn (auch "Lamellenfedern" genannt) und einer Oberbewicklung aus einem textilen Material. Mit der textilen Oberbewicklung kommt die zu glättende Wäsche in Berührung. Die Federn der Unterbewicklung dienen dazu, den Mantel der Mangelwalze zum Ausgleich von Unebenheiten federn auszubilden.Trough mangles, especially for commercial laundries, have a rotating drivable mangle roller, which is provided on the outer circumference with a winding. The winding is formed of a Unterbewicklung (also called "feathering") with a wrapped around the mangle roller webbing and a plurality of lamellar successively attached to the webbing springs (also called "lamellar springs") and a Oberbewicklung of a textile material. With the textile Oberbewicklung comes to be smoothed laundry in touch. The springs of Unterbewicklung serve to form the coat of mangle roll to compensate for bumps feathers.

Aus der GB 298 780 A ist eine aus einem Gurtband und damit verbundene Federn gebildete Unterbewicklung für eine Mangelwalze bekannt. Die Federn dieser bekannten Unterbewicklung können aus Edelstahl sein. Zum Material des Gurtbands ist nichts gesagt.From the GB 298 780 A is a formed of a webbing and associated springs Unterbewicklung for a mangle roll known. The springs of this known Unterbewicklung can be made of stainless steel. Nothing is said about the material of the webbing.

Die EP 0 736 627 A1 offenbart eine Unterbewicklung aus Schraubenfedern und zusammenhängenden plattenartigen Elementen. Sowohl die Schraubenfedern als auch die plattenartigen Elemente sind aus rostfreiem Stahl gebildet.The EP 0 736 627 A1 discloses a Unterbewicklung of coil springs and continuous plate-like elements. Both the coil springs and the plate-like elements are made of stainless steel.

Die GB 650 212 A offenbart eine Unterfederung, die ähnlich ausgebildet ist wie beim vorstehend beschriebenen Stand der Technik. Materialangaben zu den Federn und dem Gurtband gehen aus dieser Schrift aber nicht hervor.The GB 650 212 A discloses a spring base that is similar to the prior art described above. Material specifications for the springs and the webbing are not apparent from this document.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Unterbewicklung zu schaffen, die optimale Materialeigenschaften aufweist, einfach aufgebaut ist und über eine verhältnismäßig lange Lebensdauer verfügt.Proceeding from this, the present invention seeks to provide a Unterbewicklung having optimal material properties, is simple and has a relatively long life.

Eine Unterbewicklung zur Lösung der Aufgabe weist die Merkmale des Anspruchs 1 auf. Demnach ist vorgesehen, die Federn aus einem Edelstahl mit federstahlähnlichen Eigenschaften zu bilden, während das Gurtband aus unlegiertem Stahl besteht. Hierbei kann es sich um sogenannten Schwarzstahl handeln. Dadurch weisen die Federn und das Gurtband optimale Materialeigenschaften auf. Das Gurtband ist deshalb aus unlegiertem Stahl gebildet, weil daraus in der Regel auch die Mangelwalze hergestellt ist, so dass im heißen Zustand der Mangelwalze die Wärmedehnung des Gurtbands derjenigen der Mangelwalze entspricht. Hingegen sind die Federn aus Edelstahl gebildet, weil dieser durch die Legierungsbestandteile nicht nur federnd ist, sondern auch hochbelastbar.A Unterbewicklung to solve the problem has the features of claim 1. Accordingly, it is intended to form the springs of a stainless steel with spring steel-like properties, while the strap is made of carbon steel. This can be so-called black steel. As a result, the springs and the webbing have optimal material properties. The webbing is therefore made of carbon steel, because it is usually made from the mangle roll, so that in the hot state of the mangle roller corresponds to the thermal expansion of the webbing that of the mangle roll. By contrast, the springs are made of stainless steel, because this is not only resilient by the alloy components, but also highly resilient.

Bevorzugt ist es vorgesehen, die Federn aus rostfreiem Edelstahl zu bilden, während das Gurtband aus verzinktem, unlegierten Stahl besteht. Weil vor allem die Federn nicht nur Feuchtigkeit, sondern auch in der Wäsche noch enthaltenen Resten chemischer Zusätze ausgesetzt sind, sind Federn aus rostfreiem Edelstahl besonders widerstandsfähig. Das Gurtband ist verzinkt, was ausreicht, damit es nicht rostet und dadurch die zu glättende Wäsche beeinträchtigen könnte.Preferably, it is provided to form the springs of stainless steel, while the webbing is made of galvanized, unalloyed steel. Because, above all, the springs are not only exposed to moisture but also residues of chemical additives still contained in the laundry, springs made of stainless steel are particularly resistant. The webbing is galvanized, which is sufficient so that it does not rust and thereby affect the laundry to be smoothed.

Weiter bevorzugt ist vorgesehen, die Federn mit dem Gurtband zu vernieten oder alternativ bzw. gegebenenfalls auch zusätzlich zu verschweißen. Dadurch kommen einfach herzustellende, dauerhafte Verbindungen der Federn mit dem Gurtband zustande. Das Verschweißen erfolgt vorzugsweise durch Punktschweißen. Das Vernieten kann beispielsweise durch Hohlnieten erfolgen. Besonders geeignet ist das Vernieten zum Verbinden der Federn mit dem Gurtband, weil beide aus unterschiedlichen Materialien bestehen.More preferably, it is provided to rivet the springs with the strap or alternatively or optionally also to be welded. As a result, come easy to produce, permanent connections of the springs with the webbing. The welding is preferably carried out by spot welding. The riveting can be done for example by hollow rivets. Particularly suitable is the riveting for connecting the springs with the webbing, because both consist of different materials.

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

Fig. 1
einen Querschnitt durch eine mit einer Bewicklung versehene Mangelwalze,
Fig. 2
eine Vorderansicht der Mangelwalze der Fig. 1 mit teilweise freigelegter Unterbewicklung,
Fig. 3
eine perspektivische Darstellung mehrerer aufeinanderfolgend an einem Gurtband befestigten Federn der Unterbewicklung,
Fig. 4
einen Längsschnitt durch mehrere aufeinanderfolgende Federn,
Fig. 5
einen vergrößerten Längsschnitt durch eine Feder, und
Fig. 6
eine Draufsicht auf die Feder der Fig. 5.
A preferred embodiment of the invention will be explained in more detail with reference to the drawing. In this show:
Fig. 1
a cross section through a provided with a winding mangle roll,
Fig. 2
a front view of the mangle roller of Fig. 1 with partly exposed underwinding,
Fig. 3
a perspective view of several consecutively attached to a webbing springs of the Unterbewicklung,
Fig. 4
a longitudinal section through several consecutive springs,
Fig. 5
an enlarged longitudinal section through a spring, and
Fig. 6
a plan view of the spring of Fig. 5 ,

Die in den Fig. 1 und 2 gezeigte Mangelwalze 10 ist Teil einer Muldenmangel zum Glätten von Wäschestücken. Muldenmangeln dieser Art werden bevorzugt in gewerblichen Wäschereien eingesetzt.The in the Fig. 1 and 2 Mangle roller 10 shown is part of a tray deficiency for smoothing laundry. Trough mangles of this type are preferably used in commercial laundries.

Etwa die untere Hälfte der Mangelwalze 10 ist umgeben von einer in den Figuren nicht gezeigten, beheizbaren Mangelmulde. Zwischen der Mangelmulde und der Mangelwalze 10 ist ein schmaler Mangelspalt gebildet, durch den die um ihre üblicherweise horizontale Längsmittelachse 16 drehend antreibbare Mangelwalze 10 das zu glättende Wäschestück hindurchtransportiert.Approximately the lower half of the mangle roller 10 is surrounded by a not shown in the figures, heatable mangle trough. Between the mangle trough and the mangle roll 10, a narrow mangle gap is formed, through which the mangle roll 10, which can be driven in rotation about its usually horizontal longitudinal center axis 16, transports the piece of linen to be smoothed.

Eine zylindrische Mantelfläche 11 der Mangelwalze 10 ist von einer Bewicklung 12 umgeben. Die Bewicklung 12 setzt sich zusammen aus einer um die Mantelfäche 11 schraubenförmig herumgelegten Unterbewicklung 13, die auch als Befederung bezeichnet wird, und einer außenliegenden Oberbewicklung 14 aus einem üblicherweise textilen Material. Die Oberbewicklung 14 umgibt und überdeckt die Unterbewicklung 13.A cylindrical outer surface 11 of the ironer roller 10 is surrounded by a winding 12. The winding 12 is composed of a wound around the cladding 11 helically underwound 13, which is also referred to as feathering, and an outer Oberbewicklung 14 of a usually textile material. The Oberbewicklung 14 surrounds and covers the Unterbewicklung 13th

Die die Oberbewicklung 14 tragende Unterbewicklung 13 ist federnd ausgebildet. Dazu ist die Unterbewicklung 13 aus einer Vielzahl von gleichen Federn 15 gebildet. Im Fachjargon werden diese Federn 15, die dicht aufeinanderfolgend aufgereiht, also lamellenartig, um die Mangelwalze 10 herum angeordnet sind (Fig. 4), als "Lamellenfedern" bezeichnet.The Oberbewicklung 14 supporting Unterbewicklung 13 is resilient. For this purpose, the sub-winding 13 is formed from a plurality of identical springs 15. In technical jargon, these springs 15, which are lined up in close succession, ie lamellar, are arranged around the ironer roller 10 (FIG. Fig. 4 ), called "lamellar springs".

Die Unterbewicklung 13 weist zusätzlich zu den Federn 15 einen streifenförmigen Träger auf, bei dem es sich im gezeigten Ausführungsbeispiel um ein Gurtband 17 handelt. Das Gurtband 17 weist die Breite jeweils einer Feder 15 auf und verfügt über eine verhältnismäßig dünne Wandstärke, damit es ausreichend flexibel ist, um schraubenförmig umlaufend um die Mantelfläche 11 der Mangelwalze 10 herumgewickelt werden zu können (Fig. 2). Die gesamte Mantelfläche 11 der Mangelwalze 10 ist dadurch lückenlos vom schraubenförmig um dieselbe herumgewickelten Gurtband 17 überdeckt.The underwinding 13 has, in addition to the springs 15, a strip-shaped carrier, which in the exemplary embodiment shown is a strap 17. The webbing 17 has the width of each of a spring 15 and has a relatively thin wall thickness, so that it is sufficiently flexible to be wound around the circumferential surface 11 of the mangle roller 10 helically around ( Fig. 2 ). The entire lateral surface 11 of the ironer roller 10 is thereby completely covered by the helically wound around the same webbing 17.

Die Federn 15 sind mit dem Gurtband 17 vorzugsweise fest verbunden. Dadurch wird nach dem Herumwickeln des Gurtbands 17 um die Mantelfläche 11 die gesamte Mangelwalze 10 lückenlos von in Umfangsrichtung aufeinanderfolgenden und in Längsrichtung nebeneinanderliegenden Federn 15 abgedeckt (Fig. 2).The springs 15 are preferably fixedly connected to the webbing 17. As a result, after wrapping of the webbing 17 about the lateral surface 11, the entire mangle drum 10 is covered gaplessly by circumferentially successive and longitudinally juxtaposed springs 15 (FIG. Fig. 2 ).

Die Fig. 5 und 6 zeigen eine einzelne Feder 15. Die Feder 15 ist einstückig ausgebildet. Sie setzt sich zusammen aus einem quer zur Wickelrichtung des Gurtbands 17 um die Mangelwalze 10 verlaufenden Federsockel 18, einem ebenfalls quer zur Wickelrichtung verlaufenden Federkopf 19 und einem zwischen dem Federsockel 18 und dem Federkopf 19 angeordneten und diese verbindenden Federsteg 20. Bei unbelasteter Feder 15 liegen der Federkopf 19 und der Federsockel 18 in zwei voneinander beabstandeten, parallelen Ebenen, während der Federsteg 20 schräg zwischen beiden verläuft. Der Federkopf 19 und der Federsockel 18 verfügen über etwa rechteckförmige Grundflächen, wobei der Federkopf 19 in Wickelrichtung gesehen länger ist als der Federsockel 18. Bevorzugt weisen der Federsockel 18 und der Federkopf 19 gleiche Breite auf. Im Federkopf 19 sind mehrere gegenüber einer Oberseite 21 der Feder nach oben vorstehende Haken 22 vorgesehen. Im gezeigten Ausführungsbeispiel weist der Federkopf 19 sechs gleiche Haken 22 auf, die in zwei parallelen, quer zur Wickelrichtung verlaufenden Reihen zu jeweils drei Haken 22 gruppiert sind. Die Anzahl und Anordnung der Haken 22 kann aber vom gezeigten Ausführungsbeispiel abweichen. Die Haken 22 dienen zur Befestigung der Oberbewicklung 14 auf dem Federkopf 19 der jeweiligen Feder 15. Die Haken 22 sind aus dem Federkopf 19 ausgestanzt. Dabei werden vor den freien Ende der Haken runde Durchbrüche 23 in den Federkopf 19 eingestanzt, die das Ende der Ausstanzungen für die Haken 22 begrenzen.The FIGS. 5 and 6 show a single spring 15. The spring 15 is integrally formed. It is composed of a transverse to the winding direction of the webbing 17 to the ironer roller 10 extending spring base 18, also extending transversely to the winding direction spring head 19 and disposed between the spring socket 18 and the spring head 19 and connecting them spring bar 20. When unloaded spring 15 are the spring head 19 and the spring base 18 in two spaced, parallel planes, while the spring bar 20 extends obliquely between the two. The spring head 19 and the spring base 18 have approximately rectangular base surfaces, wherein the spring head 19 seen in the winding direction is longer than the spring base 18. Preferably, the spring base 18 and the spring head 19 have the same width. In the spring head 19 a plurality opposite a top 21 of the spring upwardly projecting hooks 22 are provided. In the illustrated embodiment, the spring head 19 six identical hooks 22, which are grouped in two parallel, transversely to the winding direction extending rows of three hooks 22. The number and arrangement of the hooks 22 may differ from the embodiment shown. The hooks 22 are used to attach the Oberbewicklung 14 on the spring head 19 of the respective spring 15. The hooks 22 are punched out of the spring head 19. In this case, round openings 23 are punched into the spring head 19 in front of the free end of the hook, which delimit the end of the punched holes for the hooks 22.

Im Federsockel 18 befinden sich im gezeigten Ausführungsbeispiel zwei kreisrunde Durchbrüche 24. Diese können beispielsweise auch gestanzt sein.In the illustrated embodiment, two circular openings 24 are located in spring base 18. These can also be punched, for example.

In besonderer Weise ist der Federsteg 20 ausgebildet. Er ist zu seinem mittleren Bereich hin tailliert, wodurch die schmalste Stelle des Federstegs 20 in seinem mittleren Bereich zwischen dem Federkopf 19 und dem Federsockel 18 liegt (Fig. 6). Der Federsteg 20 ist von gegenüberliegenden Längsrändern 26 begrenzt. Beide Längsränder 26 verfügen über einen gleichen Verlauf. Demzufolge ist der Federsteg 20 in Bezug auf eine in Wickelrichtung der Unterbewicklung 13 um die Mangelwalze 10 verlaufende Längsmittelachse 25 symmetrisch ausgebildet. An jeder Stelle der Längsmittelachse 25 sind die gegenüberliegenden Längsränder 26 des Federstegs 20 von der Längsmittelachse 25 gleich weit entfernt.In a special way, the spring bar 20 is formed. It is waisted to its central region, whereby the narrowest point of the spring bar 20 is in its central region between the spring head 19 and the spring base 18 ( Fig. 6 ). The spring bar 20 is bounded by opposite longitudinal edges 26. Both longitudinal edges 26 have a same course. Accordingly, the spring bar 20 is symmetrical with respect to a longitudinal center axis 25 extending in the winding direction of the lower roll 13 around the ironer roller 10. At each point of the longitudinal central axis 25, the opposite longitudinal edges 26 of the spring bar 20 are equidistant from the longitudinal central axis 25.

Die Taillierung und der Verlauf der Längsränder 26 des Federstegs 20 kommen zustande durch zwei unterschiedlich große Radien 27 und 28 und eine Gerade 29. Der größere Radius 27 geht vom Federsockel 18 aus, während der kleinere Radius 28 vom Federkopf 19 ausgeht. Etwa in der Mitte des Federstegs 20 befindet sich die Gerade 29 jedes Längsrands 26. Die Geraden 29 der gegenüberliegenden Längsränder 26 verlaufen parallel zueinander. Jede Gerade 29 ist relativ kurz. Vorzugsweise beträgt die Länge jeder Geraden 29 nur 3 mm bis 6 mm, insbesondere etwa 4 mm. Die Radien 27 und 28 gehen stufenlos in die Enden der Geraden 29 über, und zwar tangential (Fig. 6). Die äußeren Enden der Radien 27 und 28 gehen ebenfalls stufenlos in gerade, parallele Längsränder 30 und 31 des Federsockels 18 bzw. des Federkopfes 19 über, aber abgerundet durch kleinere Radien 32 und 33, deren Mittelpunkt im Gegensatz zu den Radien 27 und 28 nicht außerhalb der Fläche der Feder 15 liegt, sondern innerhalb der Fläche der Feder 15.The sidecut and the course of the longitudinal edges 26 of the spring bar 20 come about by two differently sized radii 27 and 28 and a straight line 29. The larger radius 27 starts from the spring base 18, while the smaller radius 28 from the spring head 19. Approximately in the middle of the spring bar 20 is the straight line 29 of each longitudinal edge 26. The straight lines 29 of the opposite longitudinal edges 26 are parallel to each other. Each straight line 29 is relatively short. Preferably, the length of each straight line 29 is only 3 mm to 6 mm, in particular about 4 mm. The radii 27 and 28 pass continuously into the ends of the line 29, namely tangentially ( Fig. 6 ). The outer ends of the radii 27 and 28 also go smoothly into straight, parallel longitudinal edges 30 and 31 of the spring base 18 and the spring head 19, but rounded by smaller radii 32 and 33, the center of which, in contrast to the radii 27 and 28 not outside the surface of the spring 15 is located, but within the surface of the spring 15th

Der große Radius 27 ist zwei bis drei Mal so groß wie der kleine Radius 28. Bevorzugt beträgt das Verhältnis zwischen dem großen Radius 27 und dem kleinen Radius 28 etwa 2,25 bis 2,35. Die schmalste Stelle der Taille im mittleren Bereich des Federstegs 20 beträgt 3/10 bis 4/10 der Breite des Federsockels 18 bzw. des Federkopfes 19, die im gezeigten Ausführungsbeispiel gleich breit sind. Bevorzugt beträgt die schmalste Stelle des Federstegs 20 etwa der 0,33- bis 0,36-fachen Breite des Federkopfes 19 bzw. des Federsockels 18.The large radius 27 is two to three times as large as the small radius 28. Preferably, the ratio between the large radius 27 and the small radius 28 is about 2.25 to 2.35. The narrowest point of the waist in the central region of the spring bar 20 is 3/10 to 4/10 of the width of the spring base 18 and the spring head 19, which are the same width in the embodiment shown. Preferably, the narrowest point of the spring bar 20 is approximately 0.33 to 0.36 times the width of the spring head 19 and of the spring base 18.

Der Mittelpunkt des kleinen Radius 28 liegt etwa auf der halben Gesamtlänge der Feder 15. Demgegenüber ist der Mittelpunkt des größeren Radius 27 um die Länge jeder Geraden 20 gegenüber der halben Länge, also der Mitte der Feder 15 zum Federsockel 18 hin, versetzt. Der seitliche Versatz beträgt bezogen auf die Gesamtlänge der Feder 15 etwa das 0,3- bis 0,35-fache des kleinen Radius 28. Der in Richtung der Längsmittelachse 25 verlaufende Abstand der Mittelpunkte der Radien 27 und 28 wird im Bereich der Taille überbrückt von den Geraden 29. Die Geraden 29 erstrecken sich dadurch ausgehend von etwa der halben Länge der Feder 15 zum Federsockel 18 hin. Der Federkopf 19 ist länger als der Federsockel 18, und zwar um das 2- bis 4-fache, vorzugsweise das 2,5- bis 3-fache der Länge (in Richtung der Längsmittelachse 25) des Federsockels 18.In contrast, the center of the larger radius 27 by the length of each straight line 20 with respect to half the length, ie the center of the spring 15 to the spring base 18 out offset. The lateral offset is based on the total length of the spring 15 about 0.3 to 0.35 times the small radius 28. The running in the direction of the longitudinal center axis 25 distance between the centers of the radii 27 and 28 is in the region of the waist bridged by the straight line 29. The straight lines 29 extend thereby starting from about half the length of the spring 15 to the spring socket 18 back. The spring head 19 is longer than the spring base 18, namely by 2 to 4 times, preferably 2.5 to 3 times the length (in the direction of the longitudinal central axis 25) of the spring socket 18th

Der Höhenversatz des Federkopfes 19 gegenüber dem Federsockel 18 beträgt bei unbelasteter Feder 15 etwa 10 mm bis 20 mm, insbesondere 13 mm bis 16 mm. Dieser Höhenversatz entspricht etwa dem 0,5- bis 0,7-fachen der Breite des Federkopfes 19 bzw. des Federsockels 18. Insbesondere liegt der Höhenversatz des Federsockels 18 gegenüber dem Federkopf 19 beim 0,4- bis 0,6-fachen der Breite des Federsockels 18 bzw. des Federkopfes 19.The height offset of the spring head 19 relative to the spring base 18 is at unloaded spring 15 is about 10 mm to 20 mm, in particular 13 mm to 16 mm. This height offset corresponds approximately to 0.5 to 0.7 times the width of the spring head 19 and the spring base 18. In particular, the height offset of the spring base 18 relative to the spring head 19 is 0.4 to 0.6 times the width the spring base 18 and the spring head 19.

Die Dicke des Blechs zur Bildung der Feder 15 beträgt etwa 0,3 mm bis 0,7 mm, insbesondere ist die Blechdicke etwa 0,5 mm. Die Gesamtlänge der Feder 15 (entlang der neutralen Faser) beträgt 60 mm bis 65 mm, während die maximale Breite insbesondere im Bereich des Federsockels 18 und im Bereich des Federkopfes 19 etwa 23 mm bis 27 mm beträgt. Demzufolge liegt das Längen-Breitenverhältnis der Feder 15 etwa bei 2,4 bis 2,6, insbesondere 2,5.The thickness of the sheet for forming the spring 15 is about 0.3 mm to 0.7 mm, in particular, the sheet thickness is about 0.5 mm. The total length of the spring 15 (along the neutral fiber) is 60 mm to 65 mm, while the maximum width is approximately 23 mm to 27 mm, in particular in the region of the spring base 18 and in the region of the spring head 19. As a result, the length-width ratio of the spring 15 is about 2.4 to 2.6, especially 2.5.

Am Übergang des Federstegs 20 zum Federkopf 19 befindet sich eine Abstufung 34, die etwa der Wandstärke des Blechs zur Bildung der jeweiligen Feder 15 entspricht. Im Bereich der Abstufung 34 liegt das Ende des Federkopfes 19 der benachbarten Feder 15 auf dem Federkopf 19 der vorangehenden Feder 15 auf (Fig. 3 und 4).At the transition of the spring bar 20 to the spring head 19 is a gradation 34, which corresponds approximately to the wall thickness of the sheet to form the respective spring 15. In the region of the gradation 34 is the end of the spring head 19 of the adjacent spring 15 on the spring head 19 of the preceding spring 15 ( 3 and 4 ).

Gleichermaßen ist am Übergang des Federstegs 20 zum Federsockel 18 eine Abstufung 35 vorgesehen. Am vom Federsteg 20 wegweisenden Ende der Abstufung 35 befindet sich eine Aufwölbung 36 in der Oberseite 21 der Feder 15. Die Aufwölbung 36 dient zur Abstützung benachbarter Federn 15, wenn die Federn 15 vollständig zusammengedrückt sind. Die Aufwölbung 36 erstreckt sich quer zur Längsmittelachse 25 der Feder 15.Similarly, a gradation 35 is provided at the transition of the spring bar 20 to the spring base 18. At the end of the gradation 35 pointing away from the spring bar 20, there is a bulge 36 in the upper side 21 of the spring 15. The bulge 36 serves to support adjacent springs 15 when the springs 15 are completely compressed. The bulge 36 extends transversely to the longitudinal central axis 25 of the spring 15th

Die Feder 15 ist gebildet aus einem Blech aus legiertem Federstahl. Insbesondere handelt es sich beim legierten Federstahl um Edelstahl mit federstahlähnlichen Eigenschaften. Besonders bevorzugt wird rostfreier Edelstahl mit federstahlähnlichen Eigenschaften für die Feder 15 verwendet. Es kann sich hierbei um Edelstahl mit der Werkstoffnummer 1.4310 handeln.The spring 15 is formed from a sheet of alloyed spring steel. In particular, the alloyed spring steel is stainless steel with spring steel-like properties. Particularly preferred stainless steel is used with spring steel-like properties for the spring 15. This may be stainless steel with the material number 1.4310.

Die Fig. 3 zeigt die lamellenartige aufeinanderfolgende Anordnung mehrerer Federn 15 auf dem Gurtband 17. Die Federn 15 sind an den Federsockeln 18 mit dem Gurtband 17 verbunden, und zwar so, dass alle Federn 15 derart zur Längsrichtung des Gurtbands 17 ausgerichtet sind, dass die Längsmittelachsen 25 aller Federn 15 auf der Längsmittelachse des Gurtbands 17 liegen.The Fig. 3 shows the lamellar successive arrangement of a plurality of springs 15 on the webbing 17. The springs 15 are connected to the spring bases 18 with the webbing 17 in such a way that all springs 15 are aligned to the longitudinal direction of the webbing 17, that the longitudinal center axes 25 of all springs 15 lie on the longitudinal center axis of the webbing 17.

Die Befestigung der Federn 15 auf dem Gurtband 17 erfolgt durch Nieten 39. Die nur symbolisch in der Fig. 3 dargestellten Nieten 39 erstrecken sich durch die Durchbrüche 24 im Federsockel 18 jeder Feder 15 und entsprechende Durchbrüche im Gurtband 17. Bei den Nieten handelt es sich bevorzugt um Hohlnieten. Im gezeigten Ausführungsbeispiel wird jede Feder 15 mit zwei nebeneinanderliegenden Nieten 39, die sich durch die beiden Durchbrüche 24 erstrecken, mit dem Federsockel 18 auf dem Gurtband 17 befestigt. Es ist denkbar, jede Feder 15 alternativ oder zusätzlich durch Schweißen mit dem Gurtband 17 dauerhaft zu verbinden.The attachment of the springs 15 on the webbing 17 is carried out by riveting 39. The only symbolic in the Fig. 3 shown rivets 39 extend through the openings 24 in the spring socket 18 of each spring 15 and corresponding openings in the webbing 17. The rivets are preferably hollow rivets. In the illustrated embodiment, each spring 15 with two adjacent rivets 39, which extend through the two apertures 24, secured to the spring base 18 on the webbing 17. It is conceivable to connect each spring 15 alternatively or additionally by welding to the webbing 17 permanently.

Die Verbindung der Federn 15 mit dem Gurtband 17 erfolgt derart, dass die Federköpfe 19 benachbarter Federn 15 sich teilweise streifenartig überlappen (Fig. 4). Dabei ragen freie Endstreifen der Federköpfe 19 der Feder 15 in die Abstufung 34 am Übergang des Federkopfs 19 zum Federsteg 20 der vorangehenden Feder 15. Infolge der etwa der Wandstärke der Feder 15 entsprechenden Abstufung 34 verlaufen trotz der teilweisen Überlappung die Oberseiten 40 der Federköpfe 19 bei noch geradem Gurtband 17 gemäß der Darstellung in der Fig. 4 in einer gemeinsamen Ebene, wodurch auf der Oberseite der Unterbewicklung 13 kein Absatz entsteht und dadurch die Oberbewicklung 14 auf die Oberseiten 40 der Federköpfe 19 der Federn 15 aufgebracht und an den Haken 22 fixiert werden kann, ohne dass dadurch Absätze in der Oberbewicklung 14 entstehen.The connection of the springs 15 with the webbing 17 is such that the spring heads 19 adjacent springs 15 partially overlap strip-like ( Fig. 4 ). In this case, projecting free end strip of the spring heads 19 of the spring 15 in the gradation 34 at the transition of the spring head 19 to the spring bar 20 of the preceding spring 15. As a result of about the wall thickness of the spring 15 corresponding gradation 34 run despite the partial overlap the tops 40 of the spring heads 19 at still straight webbing 17 as shown in the Fig. 4 in a common plane, which creates no paragraph on the top of the lower roll 13 and thereby the Oberbewicklung 14 can be applied to the tops 40 of the spring heads 19 of the springs 15 and fixed to the hook 22, without thereby paragraphs in the Oberbewicklung 14 arise.

Das aus einem Blechstreifen mit etwa der Dicke des Blechs zur Bildung der Federn 15 gebildete Gurtband 17 besteht aus einem anderen Material als die Federn 15. Es handelt sich beim Material des Gurtbands 17 um einfachen Stahl, sogenannten Schwarzstahl, und zwar insbesondere unlegierten Stahl. Dieser zum Rosten neigende Stahl ist verzinkt. Bevorzugt handelt es sich beim Material des Gurtbands 17 um das gleiche Material, aus dem zumindest die Mantelfläche 11 der Mangelwalze 10 gebildet ist. Dadurch verfügt das Gurtband 17 über das gleiche Wärmeverhalten, insbesondere die gleiche Wärmedehnung, wie die Mangelwalze 10.The webbing 17 formed from a sheet metal strip with approximately the thickness of the sheet to form the springs 15 is made of a different material than the springs 15. It is the material of the webbing 17 to simple steel, so-called black steel, in particular unalloyed steel. This rust-prone steel is galvanized. Preferably, the material of the webbing 17 is the same material from which at least the lateral surface 11 of the mangle roller 10 is formed. Characterized the webbing 17 has the same thermal behavior, in particular the same thermal expansion, as the mangle roller 10th

Die Nieten 39, insbesondere Hohlnieten, zur Verbindung der Federn 15 mit dem Gurtband 17 können aus einem beliebigen Material bestehen. Vorzugsweise bestehen die Nieten 39 entweder aus dem Material der Federn 15 oder aus dem Material des Gurtbandes 17.The rivets 39, in particular hollow rivets, for connecting the springs 15 to the webbing 17 may be made of any material. Preferably, the rivets 39 consist either of the material of the springs 15 or of the material of the webbing 17th

Claims (3)

  1. Under-wrapping for a mangle roller (10) of a trough mangle, having a belt band (17) wrapped around a lateral face (11) of the mangle roller (10), and having a multiplicity of springs (15) which are connected in sequence to the belt band (17) in a laminar manner, characterized in that the springs (15) are made of stainless steel, and the belt band (17) is made of unalloyed steel.
  2. Under-wrapping according to Claim 1, characterized in that the springs (15) are made of stainless steel having spring steel properties, and the belt band (17) is made of galvanized unalloyed steel.
  3. Under-wrapping according to Claim 1 or 2, characterized in that the springs (15) are riveted and/or welded to the belt band (17).
EP11002272.0A 2010-05-21 2011-03-19 Undercovering of a mangle roller Active EP2388370B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010022182 DE102010022182A1 (en) 2010-05-21 2010-05-21 A method for producing a spring for underwinding a mangle roll, a Unterbewicklung and a spring

Publications (3)

Publication Number Publication Date
EP2388370A2 EP2388370A2 (en) 2011-11-23
EP2388370A3 EP2388370A3 (en) 2016-07-20
EP2388370B1 true EP2388370B1 (en) 2017-12-20

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Application Number Title Priority Date Filing Date
EP11002272.0A Active EP2388370B1 (en) 2010-05-21 2011-03-19 Undercovering of a mangle roller

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DE (1) DE102010022182A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1432940A (en) * 1922-08-02 1922-10-24 Yates Machine Company Padding element for ironing machines
US1591281A (en) * 1924-06-06 1926-07-06 American Laundry Mach Co Padding
GB238708A (en) * 1924-09-02 1925-08-27 American Laundry Mach Co Improvements in ironing machines
GB298780A (en) * 1927-10-25 1928-10-18 Norman Hawkins Mackenzie Improvements in laundry ironing machines
GB329309A (en) * 1929-02-14 1930-05-14 Troy Laundry Machinery Co Improvements in and relating to resilient paddings for ironing machines
US1990648A (en) * 1933-02-23 1935-02-12 Herzog Edward Cushion mangle drum
GB650212A (en) * 1948-12-15 1951-02-14 D & J Tullis Ltd Improvements relating to resilient padding for laundry machinery
DE1208284B (en) * 1960-01-19 1966-01-05 Werner E Schmitz Multi-layer support for ironers. Ironing presses or the like.
DE3310019A1 (en) * 1983-03-19 1984-09-20 Miele & Cie GmbH & Co, 4830 Gütersloh Roller covering for the roller of a pressing machine, laundry mangle or the like
JP2729770B2 (en) * 1995-04-03 1998-03-18 三愛工業株式会社 Spring for sheet roll machine
EP1041188A3 (en) * 1999-03-30 2001-01-17 Kannegiesser Aue GmbH Method for producing a blade spring for a winding around an ironing roller , a winding and a blade spring

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2388370A2 (en) 2011-11-23
EP2388370A3 (en) 2016-07-20
DE102010022182A1 (en) 2011-11-24

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