AU2016223811B2 - Method for producing an upholster spring, upholstery spring, mattress, and upholstered furniture - Google Patents
Method for producing an upholster spring, upholstery spring, mattress, and upholstered furniture Download PDFInfo
- Publication number
- AU2016223811B2 AU2016223811B2 AU2016223811A AU2016223811A AU2016223811B2 AU 2016223811 B2 AU2016223811 B2 AU 2016223811B2 AU 2016223811 A AU2016223811 A AU 2016223811A AU 2016223811 A AU2016223811 A AU 2016223811A AU 2016223811 B2 AU2016223811 B2 AU 2016223811B2
- Authority
- AU
- Australia
- Prior art keywords
- spring
- upholstery
- steel wire
- spring steel
- colour
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims 2
- 150000001879 copper Chemical class 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
Abstract
The invention relates to a method for producing an upholstery spring, in particular for upholstered furniture or mattresses, comprising an application of a heat-sensitive color indicator onto a spring steel wire, at least in some areas, during or after the bending of the spring steel wire, a heating of the spring steel wire to at least the changeover temperature of the color indicator, and a completion of the upholstery spring. The invention further relates to an upholstery spring, a mattress or a piece of upholstered furniture having such an upholstery spring.
Description
Method for producing an upholster spring, upholstery spring, mattress and upholstered furniture
The present invention relates to a method for producing an upholstery spring, in particular for upholstered furniture or mattresses, an upholstery spring, a mattress and upholstered furniture.
DE 10 2013 103 644 discloses a spring of a spring core which is made of wire and can be used, for example, for mattresses or upholstered furniture .The spring consists of a helically wound spring steel wire that deforms when loaded. Such springs have proven to be useful in the manufacture of upholstered furniture and mattresses, wherein the springs are heat-treated in production in order to make them tougher. A heat treatment of this type prevents a drop in individual springs and the resulting depressions such as troughs in cushions or mattresses. However, it can only be determined with great effort whether adequate heat treatment was performed. As a rule, a check is not possible for the end user.
It is therefore the object of the present invention to provide a method for producing an upholstery spring, in which it is possible to ensure in a simple manner that adequate heat treatment has been carried out. Furthermore, a mattress and upholstered furniture with such an upholstery spring should be provided.
In order to achieve this object, the method for producing an upholstery spring provides that a heat-sensitive colour indicator is applied at least in sections to a spring steel wire before, during or after the bending of the spring steel wire, and then the spring steel wire is heated to at least the changeover temperature of the colour indicator before the upholstery spring is completed. By applying the heat-sensitive colour indicator it is ensured that the heat treatment of the spring steel wire can be rendered visually visible. By means of a corresponding colour change, it is recognizable for the manufacturer of upholstered furniture and mattresses as well as for the end customer whether a heat treatment was made which makes the spring steel wire tougher. As a result, an important quality criterion can be visually emphasized for upholstery springs.
Preferably, the spring steel wire is heated to above 2800 C during the heat treatment. For heat treatment, the spring steel wire can, for example, be heated to a temperature of between 290 0C to 310 0C, wherein the duration of the heat treatment can be configured depending on the spring steel wire used, but the temperature above 2900 C must be reached at least briefly. The changeover temperature of the colour indicator is therefore also preferably at least 2500 C, in particular between 2900 C and 3100 C. The positive effects by the heat treatment occur at these temperatures.
For effective production of the upholstery spring, the colour indicator can be applied by an immersion bath. The coating can occur in a purely electrochemical manner or galvanically by applying a voltage. The colour indicator preferably has a thickness between 0.05 to 1 pm, in particular 0.10 and 0.80 pm, so that the colour indicator is applied to the spring steel wire only in small amounts.
Preferably, a copper-containing coating is applied as a colour indicator, which does not adversely affect the mechanical properties of the upholstery spring .The copper containing coating can also essentially consist entirely of copper, which is applied to the spring steel wire with a low layer thickness. It is also possible to use suitable copper alloys in order to set a certain transition temperature. In the case of the colour change, the copper-coloured coating is then darker or lighter, depending on the temperature reached, which is clearly visible.
In a further embodiment of the invention, the colour indicator is applied to the spring steel wire only in some areas, which is particularly material-saving. The colour indicator can, for example, be applied only to a central region of the upholstery spring, which deforms upon loading, so that the colour indicator at least indicates whether the deforming region has been heat-treated. Then the end rings of an upholstery spring which are arranged at opposite sides can remain uncoated. Of course, it is also possible to completely coat the upholstery spring with the colour indicator.
According to the invention, an upholstery spring is also provided, which is used in particular in a mattress or a piece of upholstered furniture. It is possible for a mattress or a piece of upholstered furniture that a viewing window is provided in a cover for the upholstery spring or a unit comprising a plurality of upholstery springs so that an end customer can also recognize whether the upholstery spring has been correspondingly heat-treated.
The invention is explained in more detail below with reference to an exemplary embodiment shown in the attached drawings, wherein:
Fig. 1 shows a photographic view of an upholstery spring with a coating of a colour indicator according to the invention before and after the heat treatment, and
Fig. 2 shows a conventional upholstery spring without a colour indicator.
Fig. 2 shows an upholstery spring without a coating of a heat-sensitive colour indicator. It can be seen that the spring steel wire from which the upholstery spring is made has the same colour everywhere and it is not optically apparent whether a heat treatment has been carried out with this upholstery spring in order to make the spring steel wire tougher.
On the left side in Fig. 1, an upholstery spring according to the present invention is shown. The upholstery spring is helically wound in a middle region between two end rings arranged in parallel and is coated in this central region with a heat-sensitive colour indicator. As can be seen from the view, the central region has a different colour from the two uncoated end rings of the upholstery spring. The middle region is clearly darker, which is caused by the colour change of the heat-sensitive colour indicator as a result of the heat treatment. On the right side, an upholstery spring with colour indicator and without heat treatment is illustrated. It can be seen clearly that the colour is uniform. As a heat-sensitive colour indicator, a copper-containing coating was applied to the wire electrochemically in a thickness of between 0.15 pm to 0.75 pm. For this purpose, the wire was passed through an immersion bath and a voltage was applied to the spring steel wire, so that the copper-containing material was deposited on the surface. By means of this method, the layer thickness and the coated regions can be adjusted comparatively exactly.
In this case, the colour indicator can be applied to the still undeformed spring steel wire, so that the latter can be deformed into the shape of an upholstery spring only after coating. Preferably, a complete coating is then applied. However, it is also possible first to form the spring steel wire into an upholstery spring and at least partially coat the already formed spring steel wire.
After applying the colour indicator, the bent spring steel wire was subjected to a heat treatment, wherein the bent spring steel wire is heated to a temperature between 210°C to 250°C. By heating to this temperature, the colour indicator was activated so that an optically recognizable colour change was made in the middle region.
In the exemplary embodiment shown, only the middle region of an upholstery spring is coated with a colour indicator, wherein it is also possible to apply the colour indicator completely to the upholstery spring. Through the coating of the colour indicator in sections, it is easier to visually recognize the colour change by the heat treatment. In addition, it is possible to provide the coating only in the area of the upholstery spring, which deforms upon loading, i.e. in particular the region between the two end rings.
The upholstery spring can be bent to form different spring types. Thus, the upholstery spring can be used as a Bonell spring, a pocket spring, an open coil or as a different type of spring. The upholstery springs can also be combined into a plurality of upholstery springs and then processed into mattresses or upholstered furniture.
In order to enable the end customer to check whether high-quality upholstery springs have been used in the mattress or the upholstered furniture, at least one transparent viewing window or one formed by a recess can be provided in the cover so that an optical check is possible as to whether the upholstery spring is heat-treated.
Claims (9)
1. A method for producing an upholstery spring for upholstered furniture or mattresses, comprising the following steps: - bending a spring steel wire into a spring; - at least regionally applying a heat-sensitive colour indicator in the form of a copper-containing coating to the spring steel wire before, during or after the bending of the spring steel wire, wherein the coating is applied to the wire by an immersion bath, and wherein the coating is applied with a thickness of between 0.10 to 0.80 pm; - heating the spring steel wire to at least a changeover temperature of the colour indicator after the step of applying; and - installing the upholstery spring in a mattress or piece of upholstered furniture.
2. The method according to claim 1, characterised in that the spring steel wire is heated to above 2500 C for heat treatment and activation of the colour indicator.
3. The method according to claim 1 or 2, characterised in that the spring steel wire is heated to a temperature between 2800 C and 3200 C for heat treatment and activation of the colour indicator.
4. The method according to any one of the preceding claims, characterised in that the colour indicator is applied only in some regions to the spring steel wire.
5. The method according to claim 4, characterised in that the colour indicator is applied to a central region of the upholstery spring which deforms upon loading.
6. The method according to any one of claims 1 to 5, characterised in that the copper-containing coating is at least regionally applied by immersing the region of the wire that is to be coated in the immersion bath and applying a voltage to the wire.
7. An upholstery spring, produced by a method according to any one of claims 1 to 5.
8. An article comprising a mattress or piece of upholstered furniture, the article having at least one upholstery spring disposed therein, wherein the at least one upholstery spring is produced by a method according to any one of claims 1 to 5.
9. The article according to claim 7, characterised in that a viewing window is provided on a cover for the at least one upholstery spring.
Colour change
After the colour change Before the colour change
State of the art
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015102539.6 | 2015-02-23 | ||
| DE102015102539.6A DE102015102539A1 (en) | 2015-02-23 | 2015-02-23 | Method for producing a cushion spring, cushion spring, mattress and upholstered furniture |
| PCT/EP2016/051784 WO2016134913A1 (en) | 2015-02-23 | 2016-01-28 | Method for producing an upholster spring, upholstery spring, mattress, and upholstered furniture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2016223811A1 AU2016223811A1 (en) | 2017-08-17 |
| AU2016223811B2 true AU2016223811B2 (en) | 2020-12-24 |
Family
ID=55236385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016223811A Active AU2016223811B2 (en) | 2015-02-23 | 2016-01-28 | Method for producing an upholster spring, upholstery spring, mattress, and upholstered furniture |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20180042394A1 (en) |
| EP (1) | EP3261493B1 (en) |
| CN (1) | CN107249393B (en) |
| AU (1) | AU2016223811B2 (en) |
| BR (1) | BR112017015669B1 (en) |
| DE (1) | DE102015102539A1 (en) |
| ES (1) | ES2675229T3 (en) |
| PT (1) | PT3261493T (en) |
| WO (1) | WO2016134913A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016107746A1 (en) | 2016-04-26 | 2017-10-26 | Agro Holding Gmbh | Upholstery spring, method for producing a cushion spring, mattress and upholstered furniture |
| JP6295364B1 (en) * | 2017-09-29 | 2018-03-14 | 東洋ファイン株式会社 | Metal processed product and surface treatment method of metal processed product |
| CN108339908A (en) * | 2018-01-10 | 2018-07-31 | 郭开怀 | A kind of mattress spring process equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1209252A (en) * | 1967-01-19 | 1970-10-21 | Philips Electronic Associated | Method of preparing lacquer coated articles which are subjected to thermal treatment |
| US4895740A (en) * | 1985-04-23 | 1990-01-23 | Sumitomo Electric Industries Ltd. | Process for manufacturing colored stainless steel wire |
| US20090130319A1 (en) * | 2007-11-20 | 2009-05-21 | Showa Corporation | Coil spring coating portion forming method and apparatus |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1562711A (en) * | 1925-11-24 | Chables p | ||
| DE664598C (en) * | 1937-04-03 | 1938-08-31 | Aeg | Process for making defects in enamelled wires visible |
| DE703353C (en) * | 1938-09-27 | 1941-03-07 | Siemens & Halske Akt Ges | Procedure for testing enamelled wires for faults in the insulation |
| NL141933B (en) * | 1970-04-24 | 1974-04-16 | Bekaert Sa Nv | METHOD OF COVERING A LONG-STRETCHED METAL OBJECT WITH METAL, AND OBJECTS COATED ACCORDING TO THIS METHOD. |
| US4138276A (en) * | 1976-03-01 | 1979-02-06 | J. M. Eltzroth & Associates, Inc. | Coating compositions |
| US4791025A (en) * | 1985-04-23 | 1988-12-13 | Sumitomo Electric Industries, Ltd. | Stainless steel wire and process for manufacturing the same |
| FR2599144B1 (en) * | 1986-05-20 | 1988-12-23 | Toupin Joseph | METHOD AND DEVICE FOR DETECTING THE THERMAL LEVEL TO WHICH A SOLID, LIQUID OR GAS IS LIKELY TO HAVE BEEN SUBJECT |
| CN1089117C (en) * | 1999-08-06 | 2002-08-14 | 浙江喜临门集团有限公司 | Hot treatment technology for spring washer |
| US6910360B2 (en) * | 2001-10-23 | 2005-06-28 | L&P Property Management Company | Multiple wire feed for spring coiling machine and method |
| US8474805B2 (en) * | 2008-04-18 | 2013-07-02 | Dreamwell, Ltd. | Microalloyed spring |
| CN101655129A (en) * | 2009-09-21 | 2010-02-24 | 湖北大帆汽车零部件有限公司 | Diaphragm spring and finger tip thermal processing process thereof |
| DE102013103644A1 (en) | 2013-04-11 | 2014-10-16 | Agro Holding Gmbh | Made of wire spring of a spring core |
| WO2015048536A1 (en) * | 2013-09-27 | 2015-04-02 | Chromatic Technologies Inc. | Red thermochromic dyes and their ink compositions |
| WO2015071890A1 (en) * | 2013-11-18 | 2015-05-21 | 0903608 B.C. Ltd. | Compositions, devices and methods for control of pests using vapor activity |
-
2015
- 2015-02-23 DE DE102015102539.6A patent/DE102015102539A1/en not_active Withdrawn
-
2016
- 2016-01-28 AU AU2016223811A patent/AU2016223811B2/en active Active
- 2016-01-28 US US15/549,744 patent/US20180042394A1/en not_active Abandoned
- 2016-01-28 ES ES16701681.5T patent/ES2675229T3/en active Active
- 2016-01-28 EP EP16701681.5A patent/EP3261493B1/en active Active
- 2016-01-28 WO PCT/EP2016/051784 patent/WO2016134913A1/en active Application Filing
- 2016-01-28 BR BR112017015669-5A patent/BR112017015669B1/en active IP Right Grant
- 2016-01-28 PT PT16701681T patent/PT3261493T/en unknown
- 2016-01-28 CN CN201680010954.8A patent/CN107249393B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1209252A (en) * | 1967-01-19 | 1970-10-21 | Philips Electronic Associated | Method of preparing lacquer coated articles which are subjected to thermal treatment |
| US4895740A (en) * | 1985-04-23 | 1990-01-23 | Sumitomo Electric Industries Ltd. | Process for manufacturing colored stainless steel wire |
| US20090130319A1 (en) * | 2007-11-20 | 2009-05-21 | Showa Corporation | Coil spring coating portion forming method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3261493A1 (en) | 2018-01-03 |
| CN107249393A (en) | 2017-10-13 |
| AU2016223811A1 (en) | 2017-08-17 |
| CN107249393B (en) | 2020-08-14 |
| PT3261493T (en) | 2018-10-09 |
| US20180042394A1 (en) | 2018-02-15 |
| EP3261493B1 (en) | 2018-06-06 |
| ES2675229T3 (en) | 2018-07-09 |
| WO2016134913A1 (en) | 2016-09-01 |
| BR112017015669A2 (en) | 2018-03-13 |
| BR112017015669B1 (en) | 2021-01-19 |
| DE102015102539A1 (en) | 2016-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |