EP1171377B1 - Method and system for forming strings of pocketed coil springs - Google Patents
Method and system for forming strings of pocketed coil springs Download PDFInfo
- Publication number
- EP1171377B1 EP1171377B1 EP20000911198 EP00911198A EP1171377B1 EP 1171377 B1 EP1171377 B1 EP 1171377B1 EP 20000911198 EP20000911198 EP 20000911198 EP 00911198 A EP00911198 A EP 00911198A EP 1171377 B1 EP1171377 B1 EP 1171377B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- springs
- fabric
- plies
- seam
- longitudinal
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B68—SADDLERY; UPHOLSTERY
- B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
- B68G9/00—Placing upholstery springs in pockets; Fitting springs in upholstery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Wire Processing (AREA)
- Chain Conveyers (AREA)
- Treatment Of Fiber Materials (AREA)
- Casting Devices For Molds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (32)
- A method of forming a string of pocketed coil springs comprising feeding a supply of fabric (16) such as to provide first and second generally parallel fabric plies (24, 26), inserting a series of axially compressed springs (14, 14a) between the first and second plies (24, 26), joining the first and second plies together by forming a longitudinal seam (54) proximate free edges (28) of the first and second plies (24, 26), the plies being joined at the opposite edges to the free edges (28), allowing the springs (14, 14a) to at least partially axially expand within the fabric in the same orientation as they are inserted between the plies (24, 26) so that the longitudinal axis (60) of each of the springs is generally perpendicular to the longitudinal seam (54), and forming a transverse seam (80, 80a) in the fabric between adjacent springs (14, 14a) to thereby enclose each of the springs within a fabric pocket (86), characterised in that the springs (14, 14a) are allowed to at least partially expand after joining the first and second plies (24, 26) by forming the longitudinal seam (54), and in that the transverse seams (80, 80a) are formed generally parallel to the longitudinal axes (60) of the at least partially expanded springs (14, 14a).
- The method of Claim 1 wherein the springs (14, 14a) are allowed to at least partially expand prior to forming the transverse seams (80, 80a).
- The method of either Claim 1 or Claim 2 wherein the springs (14, 14a) are allowed to expand along their longitudinal axes (60).
- The method of Claim 2 wherein the springs (14, 14a) are allowed to expand in the same orientation as they are inserted between the plies (24, 26).
- The method of any preceding claim wherein the orientation of the longitudinal axes (60) of the springs (14, 14a) remains generally unaltered during the entire process.
- The method of any preceding claim wherein the expansion of the springs (14, 14a) is controlled by a pair of rotating members (72, 102) on opposite sides of the springs within the fabric.
- The method of Claim 6 wherein the axes of rotation of the rotating members (72) is generally parallel to the longitudinal axes (60) of the springs and each rotating member (72) comprises a plurality of arcuate shaped recesses (76) which combined to partially surround each spring.
- The method of Claim 6 wherein the axes of rotation of the rotating members is generally perpendicular to the longitudinal axes (60) of the springs and each rotating member comprises a band (102) passing over spaced rollers (104, 106), wherein a separation distance between the bands (102) increases in a downstream direction to thereby control the expansion of the springs (14, 14a) between the bands.
- The method of any preceding claim further comprising pulling the fabric between a pair of rotating transport members (96) spaced on opposite sides of the fabric and located downstream from a position at which the transverse seams (80, 80a) are formed, the rotating transport members (96) comprising a plurality of arcuate shaped recesses (100) which combine to partially surround each spring.
- The method of Claim 9 wherein the step of pulling the fabric is performed after forming the transverse seams (80, 80a).
- The method of any preceding claim wherein the inserting further comprises inserting compressed springs (14a) which have a generally non-linear shaped profile adjacent to the transverse seam and the forming of the transverse seam further comprises forming the transverse seam (80a) to generally correspond to at least a portion of the profile of the adjacent springs (14a).
- The method of Claim 11 wherein the springs (14a) being inserted are barrel shaped.
- The method of any one of Claims 1 to 10 wherein the inserting further comprises inserting compressed barrel shaped springs (14a) and the forming of the transverse seam further comprises forming the transverse seam (80a) to have a generally concave configuration adjacent to the barrel shaped springs (14a).
- The method of any preceding claim wherein the fabric is a thermally weldable fabric (16) and the joining and forming steps are performed by welding the fabric together.
- The method of any preceding claim wherein the step of feeding the fabric comprises folding the fabric (16) about a longitudinal fold line (22) into the first and second plies (24, 26) such that the opposite edges are joined by the fold line (22).
- The method of any preceding claim wherein the longitudinal seam (54) is positioned generally on the side of the springs (14, 14a) between top and bottom ends thereof in the formed string (12) of pocketed coil springs.
- A system for forming a string (12) of pocketed coil springs, each of the springs (14, 14a) being enclosed within a pocket (86) formed of fabric, the system comprising a fabric supply station for providing first and second generally parallel fabric plies (24, 26), a spring insertion station (34) at which axially compressed springs (14, 14a) are individually inserted between the first and second plies (24, 26), a longitudinal seam forming station (52) located downstream from the spring insertion station (34), the longitudinal seam forming station (52) joining the first and second plies (24, 26) of the fabric together by forming a longitudinal seam (52) proximate free edges (28) of the first and second plies, the plies being joined at the opposite edges to the free edges, a spring expansion station (70) permitting the springs (14, 14a) to at least partially expand between the first and second plies (24, 26) in the same orientation as they are inserted between the plies (24, 26) so that the longitudinal axis (60) of each spring is generally perpendicular to the longitudinal seam (54), a transverse seam forming station (78) forming a transverse seam (80, 80a) in the fabric to separate each pair of adjacent springs (14, 14a) and thereby enclose each of the springs within a fabric pocket (86) when inserted therein, and a transport station (62, 94) which advances the fabric (16) and springs (14, 14a) contained therein through the respective stations, characterised in that the spring expansion station is downstream of the longitudinal seam forming station, and in that the transverse seam forming station (78) forms the transverse seams (80, 80a) generally parallel to the longitudinal axes (60) of the at least partially expanded springs.
- The system of Claim 17 wherein the transverse seam forming station (78) is downstream of the spring expansion station (70).
- The system of either Claim 17 or Claim 18 wherein the spring expansion station (70) permits the springs to expand along their longitudinal axes (60).
- The system of any one of Claims 17 to 19 wherein the springs (14, 14a) are allowed to expand in the same orientation as they are inserted between the plies (24, 26).
- The system of any one of Claims 17 to 20 wherein the orientation of the longitudinal axes (60) of the springs (14, 14a) remains generally unaltered from the spring insertion station (34) through formation of the string (12) of pocketed coil springs.
- The system of any one of Claims 17 to 21 wherein the transport station (62, 94) further comprises a pair of rotating transport members (96) spaced on opposite sides of the fabric and located downstream from the spring expansion station (70), the rotating transport members (96) comprising a plurality of arcuate shaped recesses (100) which combine to partially surround each spring (14, 14a) and the surrounding fabric to thereby pull the fabric and springs contained therein through the respective stations.
- The system of any one of Claims 17 to 22 wherein the spring expansion station (70) further comprises a pair of rotating members (72, 102) on opposite sides of the springs (14, 14a) within the fabric.
- The system of Claim 23 wherein the axes of rotation of the rotating members (72) are generally parallel to the longitudinal axes (60) of the springs and each rotating member (72) comprises a plurality of arcuate shaped recesses (76) which combine to partially surround each spring.
- The system of Claim 24 wherein the axes of rotation of the rotating members (102) are generally perpendicular to the longitudinal axes (60) of the springs and each rotating member comprises a band (102) passing over spaced rotational mounted rollers (104, 106), wherein a separation distance between the bands (102) increases in a downstream direction to thereby control the expansion of the springs between the bands (102).
- The system of any one of Claims 17 to 25 wherein the transverse seam forming station (78) forms a transverse seam (80a) which conforms to a non-linear profile of the adjacent spring (14a).
- The system of any one of Claims 17 to 26 wherein the longitudinal seam forming station (52) and the transverse seam forming station (78) each further comprise a cooperating thermal weld head and anvil (56, 58, 82, 84) to form thermal welds in the fabric.
- A string (12) of pocketed coil springs comprising two elongate fabric plies (24, 26) joined together by a longitudinal seam (54) proximate free edges (28) of the plies, the plies (24, 26) being joined at the edges opposite the free edges and having transverse seams (80, 80a) to form pockets (86), and, a spring (14, 14a) encased in each pocket and having a longitudinal axis (60) generally perpendicular to the longitudinal seam (54), the longitudinal seam (54) being positioned on the side of the springs between the ends thereof, characterising in that the fabric between the free edge (28) of each ply and the longitudinal seam (54) is folded to overlap the other to form a two layer strip in contact with the pockets (86) and the strip is attached to the pockets (86) by the transverse seams (80, 80a).
- The string of Claim 28 wherein the longitudinal seam (54) is positioned approximately midway between the ends of the springs (14, 14a).
- The string of either Claim 28 or Claim 29 wherein the fabric (16) is thermally weldable and the seams (54, 80, 80a) are thermal welds.
- The string of any one of Claims 28 to 30 wherein the opposite edges of the plies (24, 26) are integral.
- The string of any one of Claims 28 to 31 wherein each of the springs (14a) has a non-linear profile between a top and a bottom thereof and the transverse seams (80a) have a non-linear profile conforming to that of the springs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60015318T DE60015318T3 (en) | 1999-04-16 | 2000-03-31 | METHOD AND SYSTEM FOR MANUFACTURING A CHAIN OF POCKET SPRINGS |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US293221 | 1989-01-04 | ||
US353483 | 1994-12-09 | ||
US29322199A | 1999-04-16 | 1999-04-16 | |
US09/353,483 US6336305B1 (en) | 1999-04-16 | 1999-07-13 | System for forming strings of pocketed coil springs |
PCT/IB2000/000396 WO2000063113A1 (en) | 1999-04-16 | 2000-03-31 | Method and system for forming strings of pocketed coil springs |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1171377A1 EP1171377A1 (en) | 2002-01-16 |
EP1171377B1 true EP1171377B1 (en) | 2004-10-27 |
EP1171377B2 EP1171377B2 (en) | 2012-06-13 |
Family
ID=23128205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00911198A Expired - Lifetime EP1171377B2 (en) | 1999-04-16 | 2000-03-31 | Method and system for forming strings of pocketed coil springs |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP1171377B2 (en) |
JP (1) | JP4377074B2 (en) |
CN (1) | CN1251959C (en) |
AT (1) | ATE280735T1 (en) |
AU (1) | AU3318900A (en) |
BR (1) | BR0009482A (en) |
CA (1) | CA2368852C (en) |
DE (1) | DE60015318T3 (en) |
ES (1) | ES2232431T5 (en) |
GB (1) | GB2358796B (en) |
MX (1) | MXPA01010382A (en) |
PT (1) | PT1171377E (en) |
TR (1) | TR200102879T2 (en) |
WO (1) | WO2000063113A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6591436B2 (en) * | 1999-04-16 | 2003-07-15 | Spuhl Ag St. Gallen | Side seam pocketed coil springs |
US6260331B1 (en) * | 1999-06-17 | 2001-07-17 | Sidhil Technology, Llc | Method and apparatus for the manufacture of pocketed springs |
GB2358349B (en) * | 2000-10-12 | 2001-12-12 | Spuhl Ag St Gallen | Method and system for forming strings of pocketed coil springs |
SE530089C2 (en) * | 2004-10-18 | 2008-02-26 | Stjernfjaedrar Ab | Elastic mattress, such as pocket mattress, method of manufacture of such elastic mattress and device for manufacturing such elastic mattress |
CN101955150B (en) * | 2010-07-30 | 2012-11-14 | 严卓晟 | Bagged spring machine capable of continuously rolling |
EP2565152B1 (en) * | 2011-08-30 | 2014-06-18 | Spühl AG | Device for forming a hose out of pocket material and method for producing a pocket row of springs |
US9427090B2 (en) * | 2013-06-19 | 2016-08-30 | L&P Property Management Company | Pocketed spring assembly comprising strings of springs having Y-shaped seams |
CN106185780A (en) * | 2016-06-28 | 2016-12-07 | 广州市联柔机械设备有限公司 | Double-layer cloth bag spring producing device and method |
EP3969409B1 (en) * | 2019-05-14 | 2024-01-24 | NV Bekaert SA | Spool of pocketed springs |
KR102134553B1 (en) * | 2020-02-13 | 2020-07-16 | 김선용 | Pocket Spring Auto Alignment Entry |
CN112596161B (en) * | 2020-12-21 | 2023-03-24 | 成都市加朗星科技有限公司 | Multi-layer structured spot-size converter and implementation method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4439977A (en) | 1977-05-05 | 1984-04-03 | Simmons U.S.A. Corporation | Method and apparatus for making a series of pocketed coil springs |
US4234983A (en) | 1978-10-02 | 1980-11-25 | Simmons Company | Thermally welded spring pockets |
US4584023A (en) † | 1984-10-31 | 1986-04-22 | Chevron Research Company | Method for producing industrial asphalts without air-blowing using phytic acid |
US5613287A (en) | 1995-06-07 | 1997-03-25 | Simmons Company | Method for forming strings of pocketed springs |
US5749133A (en) * | 1996-09-10 | 1998-05-12 | Simmons Company | Method and apparatus for forming strings of pocketed springs |
SE9704746L (en) * | 1997-12-19 | 1998-11-09 | Stjernfjaedrar Ab | Double spring mattress and manufacturing method for such a mattress |
-
2000
- 2000-03-31 TR TR2001/02879T patent/TR200102879T2/en unknown
- 2000-03-31 CA CA002368852A patent/CA2368852C/en not_active Expired - Fee Related
- 2000-03-31 GB GB0108713A patent/GB2358796B/en not_active Expired - Fee Related
- 2000-03-31 DE DE60015318T patent/DE60015318T3/en not_active Expired - Lifetime
- 2000-03-31 MX MXPA01010382A patent/MXPA01010382A/en active IP Right Grant
- 2000-03-31 AU AU33189/00A patent/AU3318900A/en not_active Abandoned
- 2000-03-31 BR BR0009482-0A patent/BR0009482A/en not_active Application Discontinuation
- 2000-03-31 AT AT00911198T patent/ATE280735T1/en active
- 2000-03-31 ES ES00911198T patent/ES2232431T5/en not_active Expired - Lifetime
- 2000-03-31 CN CNB008062250A patent/CN1251959C/en not_active Expired - Fee Related
- 2000-03-31 WO PCT/IB2000/000396 patent/WO2000063113A1/en active IP Right Grant
- 2000-03-31 PT PT00911198T patent/PT1171377E/en unknown
- 2000-03-31 JP JP2000612214A patent/JP4377074B2/en not_active Expired - Fee Related
- 2000-03-31 EP EP00911198A patent/EP1171377B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60015318T2 (en) | 2005-11-24 |
GB0108713D0 (en) | 2001-05-30 |
CN1355766A (en) | 2002-06-26 |
EP1171377B2 (en) | 2012-06-13 |
AU3318900A (en) | 2000-11-02 |
EP1171377A1 (en) | 2002-01-16 |
DE60015318D1 (en) | 2004-12-02 |
BR0009482A (en) | 2002-03-26 |
TR200102879T2 (en) | 2002-04-22 |
GB2358796A (en) | 2001-08-08 |
ES2232431T3 (en) | 2005-06-01 |
ATE280735T1 (en) | 2004-11-15 |
JP4377074B2 (en) | 2009-12-02 |
CA2368852C (en) | 2008-12-16 |
WO2000063113A1 (en) | 2000-10-26 |
JP2002541943A (en) | 2002-12-10 |
ES2232431T5 (en) | 2012-10-22 |
CN1251959C (en) | 2006-04-19 |
MXPA01010382A (en) | 2002-03-27 |
DE60015318T3 (en) | 2012-11-08 |
GB2358796B (en) | 2001-12-12 |
CA2368852A1 (en) | 2000-10-26 |
PT1171377E (en) | 2005-04-29 |
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US5613287A (en) | Method for forming strings of pocketed springs | |
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