EP3261493A1 - Procédé de fabrication d'un ressort d'ameublement, ressort d'ameublement, matelas et meuble rembourré - Google Patents

Procédé de fabrication d'un ressort d'ameublement, ressort d'ameublement, matelas et meuble rembourré

Info

Publication number
EP3261493A1
EP3261493A1 EP16701681.5A EP16701681A EP3261493A1 EP 3261493 A1 EP3261493 A1 EP 3261493A1 EP 16701681 A EP16701681 A EP 16701681A EP 3261493 A1 EP3261493 A1 EP 3261493A1
Authority
EP
European Patent Office
Prior art keywords
spring
color indicator
steel wire
spring steel
cushion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16701681.5A
Other languages
German (de)
English (en)
Other versions
EP3261493B1 (fr
Inventor
Wolfgang Grothaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agro Holding GmbH
Original Assignee
Agro Holding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agro Holding GmbH filed Critical Agro Holding GmbH
Publication of EP3261493A1 publication Critical patent/EP3261493A1/fr
Application granted granted Critical
Publication of EP3261493B1 publication Critical patent/EP3261493B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
    • A47C27/06—Spring inlays
    • A47C27/068—Spring inlays made from a single wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F35/00—Making springs from wire

Definitions

  • the present invention relates to a method for producing a cushion spring, in particular for upholstered furniture or mattresses, a cushion spring, a mattress and upholstered furniture.
  • DE 10 2013 103 644 discloses a spring made of wire of a spring core, which can be used for example for mattresses or upholstered furniture.
  • the spring consists of a helically wound spring steel wire, which deforms under load.
  • Such springs have been proven in the manufacture of upholstered furniture and mattresses, with the springs being heat treated during manufacture to make them more tough. By such a heat treatment is a lowering of individual springs and consequent lowering, such as cooling in upholstery or mattresses, prevented.
  • the method for producing a cushion spring at least partially, a heat-sensitive color indicator is applied to a spring steel wire before, during or after bending the spring steel wire, and then the spring steel wire is heated to at least the Umzzi temperature of the color indicator before the pad spring is completed.
  • the heat-sensitive color indicator ensures that the heat treatment of the spring steel wire can be made visually visible.
  • the spring steel wire is heated above 280 ° C in the heat treatment.
  • the spring steel wire for example, be heated to a temperature between 290 ° C to 310 ° C, the duration of the heat treatment can be designed depending on the spring steel wire used, but at least briefly the temperature above 290 ° C must be achieved.
  • the turnover temperature of the color indicator is therefore preferably also at least 250 ° C, in particular between 290 ° C and 31 0 ° C. At these temperatures, the positive effects of the heat treatment occur.
  • the color indicator can be applied by immersion.
  • the coating can be carried out purely electrochemically or galvanically by applying a voltage.
  • the color indicator preferably has a thickness of between 0.05 to 1 ⁇ , in particular 0.1 to 0.80 ⁇ , so that the color indicator is applied only in small quantities on the spring steel wire.
  • a copper-containing coating is applied as the color indicator, which does not adversely affect the mechanical properties of the cushion spring.
  • the copper-containing coating can also consist essentially entirely of copper, which is applied to the spring steel wire with a small layer thickness. It is also possible to use suitable copper alloys to set a certain turnover temperature. In the color change then the copper-colored coating is darker or lighter, depending on the temperature reached, which is visually easily recognizable.
  • the color indicator is only partially applied to the spring steel wire, which is particularly material-saving.
  • the color indicator can be applied, for example, only on a central region of the cushion spring, which deforms under load, so that at least visible by the color indicator, whether the deforming region is heat treated. Then arranged on opposite sides end rings of a cushion spring can remain uncoated. Of course, it is also possible to completely coat the cushion spring with the color indicator.
  • a cushion spring is provided, which is used in particular in a mattress or upholstered furniture.
  • a viewing window is provided so that an end customer can recognize whether the pad spring has been heat treated accordingly.
  • FIG. 1 shows a photographic view of a cushion spring with a coating according to the invention of a color indicator, before and after the heat treatment, and
  • Figure 2 is a conventional pad spring without color indicator.
  • FIG. 2 shows a cushion spring without a coating of a heat-sensitive color indicator. It can be seen that the spring steel wire from which the cushion spring is made has the same color everywhere and is not visually recognizable as to whether a heat treatment has been performed on this cushion spring to make the spring steel wire toughened.
  • a cushion spring according to the present invention is shown on the left side in Figure 1, a cushion spring according to the present invention is shown. The cushion spring is helically wound in a central region between two parallel end rings and coated in this central region with a heat-sensitive color indicator. As can be seen, the central area has a different color than the two uncoated end rings of the cushion spring. The middle area is much darker due to the color change of the heat-sensitive color indicator due to heat treatment.
  • On the right side is a padded spring with color indicator and without heat treatment.
  • the color is uniform.
  • a copper-containing coating in a thickness of between 0.1 ⁇ m to 0.75 ⁇ m was electrochemically applied to the wire in the middle region.
  • the wire was passed through a dip bath while a voltage applied to the spring steel wire, so that the copper-containing coating has settled on the surface. This method makes it possible to set the layer thickness and the coated areas comparatively accurately.
  • the color indicator can be applied to the still undeformed spring steel wire, so that it only after the coating in the form of a Pad spring is deformed. Preferably, then a complete coating is made. But it is also possible to first form the spring steel wire to a cushion spring and at least partially coat the already formed spring steel wire.
  • the bent spring steel wire was subjected to a heat treatment, whereby the bent spring steel wire was heated to a temperature between 210 ° C to 250 ° C. By heating to this temperature, the color indicator was activated, so that an optically detectable color change was made in the central area.
  • the cushion spring can be bent to different types of springs.
  • the cushion spring may be formed as a Bonellfeder, pocket spring, open coil or another spring type.
  • the upholstery springs can also be combined into units of several upholstery springs and then processed into mattresses or upholstered furniture.
  • At least one transparent window or windows formed by a recess can be provided in the cover, so that a visual check is possible as to whether the upholstery spring is heat-treated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Springs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un ressort d'ameublement, en particulier pour meubles rembourrés ou matelas, ledit procédé comprenant les étapes suivantes : appliquer au moins par endroits un indicateur de couleur thermosensible sur un fil d'acier à ressorts, pendant ou après le cintrage du fil d'acier à ressorts, chauffer le fil d'acier à ressorts pour le porter à au moins la température de virage de l'indicateur de couleur et finir le ressort de virage. L'invention concerne en outre un ressort d'ameublement selon l'invention, un matelas et un meuble rembourré dotés d'un tel ressort d'ameublement.
EP16701681.5A 2015-02-23 2016-01-28 Procédé de fabrication d'un ressort d'ameublement, ressort d'ameublement, matelas et meuble rembourré Active EP3261493B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015102539.6A DE102015102539A1 (de) 2015-02-23 2015-02-23 Verfahren zur Herstellung einer Polsterfeder, Polsterfeder, Matratze und Polstermöbel
PCT/EP2016/051784 WO2016134913A1 (fr) 2015-02-23 2016-01-28 Procédé de fabrication d'un ressort d'ameublement, ressort d'ameublement, matelas et meuble rembourré

Publications (2)

Publication Number Publication Date
EP3261493A1 true EP3261493A1 (fr) 2018-01-03
EP3261493B1 EP3261493B1 (fr) 2018-06-06

Family

ID=55236385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16701681.5A Active EP3261493B1 (fr) 2015-02-23 2016-01-28 Procédé de fabrication d'un ressort d'ameublement, ressort d'ameublement, matelas et meuble rembourré

Country Status (9)

Country Link
US (1) US20180042394A1 (fr)
EP (1) EP3261493B1 (fr)
CN (1) CN107249393B (fr)
AU (1) AU2016223811B2 (fr)
BR (1) BR112017015669B1 (fr)
DE (1) DE102015102539A1 (fr)
ES (1) ES2675229T3 (fr)
PT (1) PT3261493T (fr)
WO (1) WO2016134913A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016107746A1 (de) * 2016-04-26 2017-10-26 Agro Holding Gmbh Polsterfeder, Verfahren zur Herstellung einer Polsterfeder, Matratze und Polstermöbel
JP6295364B1 (ja) * 2017-09-29 2018-03-14 東洋ファイン株式会社 金属加工品及び金属加工品の表面処理方法
CN108339908A (zh) * 2018-01-10 2018-07-31 郭开怀 一种床垫弹簧加工设备

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1562711A (en) * 1925-11-24 Chables p
DE664598C (de) * 1937-04-03 1938-08-31 Aeg Verfahren zur Sichtbarmachung von Fehlerstellen bei Lackdraehten
DE703353C (de) * 1938-09-27 1941-03-07 Siemens & Halske Akt Ges Verfahren zur Pruefung von Lackdraehten auf Fehlerstellen in der Isolation
NL6700842A (fr) * 1967-01-19 1968-07-22
NL141933B (nl) * 1970-04-24 1974-04-16 Bekaert Sa Nv Werkwijze voor het bekleden van een langgerekt metalen voorwerp met metaal, alsmede voorwerpen bekleed volgens deze werkwijze.
US4138276A (en) * 1976-03-01 1979-02-06 J. M. Eltzroth & Associates, Inc. Coating compositions
US4895740A (en) * 1985-04-23 1990-01-23 Sumitomo Electric Industries Ltd. Process for manufacturing colored stainless steel wire
US4791025A (en) * 1985-04-23 1988-12-13 Sumitomo Electric Industries, Ltd. Stainless steel wire and process for manufacturing the same
FR2599144B1 (fr) * 1986-05-20 1988-12-23 Toupin Joseph Procede et dispositif de detection du niveau thermique auquel un solide, un liquide ou un gaz sont susceptibles d'avoir ete soumis
CN1089117C (zh) * 1999-08-06 2002-08-14 浙江喜临门集团有限公司 弹簧垫热处理方法
US6910360B2 (en) * 2001-10-23 2005-06-28 L&P Property Management Company Multiple wire feed for spring coiling machine and method
JP2009125629A (ja) * 2007-11-20 2009-06-11 Showa Corp コイルばねの被覆部形成方法
US8474805B2 (en) * 2008-04-18 2013-07-02 Dreamwell, Ltd. Microalloyed spring
CN101655129A (zh) * 2009-09-21 2010-02-24 湖北大帆汽车零部件有限公司 一种膜片弹簧及其指端热处理工艺
DE102013103644A1 (de) 2013-04-11 2014-10-16 Agro Holding Gmbh Aus Draht bestehende Feder eines Federkerns
CA2962763C (fr) * 2013-09-27 2018-01-09 Chromatic Technologies Inc. Colorants thermochromiques rouges et compositions d'encre correspondantes
EP3082432B1 (fr) * 2013-11-18 2020-02-19 0903608 B.C. Ltd. Compositions, dispositifs et méthodes pour lutter contre des organismes nuisibles à l'aide de vapeurs actives

Also Published As

Publication number Publication date
AU2016223811B2 (en) 2020-12-24
PT3261493T (pt) 2018-10-09
ES2675229T3 (es) 2018-07-09
CN107249393A (zh) 2017-10-13
BR112017015669B1 (pt) 2021-01-19
US20180042394A1 (en) 2018-02-15
AU2016223811A1 (en) 2017-08-17
CN107249393B (zh) 2020-08-14
DE102015102539A1 (de) 2016-08-25
EP3261493B1 (fr) 2018-06-06
WO2016134913A1 (fr) 2016-09-01
BR112017015669A2 (pt) 2018-03-13

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