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WO1996037320A1 - Formation de ressort - Google Patents

Formation de ressort Download PDF

Info

Publication number
WO1996037320A1
WO1996037320A1 PCT/NZ1996/000051 NZ9600051W WO9637320A1 WO 1996037320 A1 WO1996037320 A1 WO 1996037320A1 NZ 9600051 W NZ9600051 W NZ 9600051W WO 9637320 A1 WO9637320 A1 WO 9637320A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
forming
portions
end portion
forming means
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.)
Ceased
Application number
PCT/NZ1996/000051
Other languages
English (en)
Inventor
Lynn Craig Turner
Stuart Hamil
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.)
SLEEPYHEAD MANUFACTURING Co Ltd
Original Assignee
SLEEPYHEAD MANUFACTURING Co Ltd
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 SLEEPYHEAD MANUFACTURING Co Ltd filed Critical SLEEPYHEAD MANUFACTURING Co Ltd
Priority to AU58476/96A priority Critical patent/AU5847696A/en
Publication of WO1996037320A1 publication Critical patent/WO1996037320A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B21F35/02—Bending or deforming ends of coil springs to special shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/123—Attachments or mountings characterised by the ends of the spring being specially adapted, e.g. to form an eye for engagement with a radial insert

Definitions

  • This invention relates to spring formation and more particularly to methods and apparatus for spring formation and a spring so formed.
  • a method of forming a spring including positioning a partially formed compression spring in retaining means, bringing forming means into engagement with end portions of said spring deforming said end portions to orientate in a direction out of register with remaining portions of said spring and inclined inwardly of said spring toward a mid-portion thereof.
  • a spring forming means including at least one guide means for engaging an end portion of said spring, forming means mounted with said guide means axially rotatable and longitudinally moveable to and from a position relative to the guide means to engage an end portion of said spring said forming means further moveable with said spring end portion engaged therewith to deform said spring to a predetermined configuration whilst adjacent spring portions are positioned by the guide means.
  • a compression spring formed from a coil of elongate deformable material, at least one end portion of said spring being deformed out of annular register with remaining portions of said spring, orientated at least partially inwardly of said spring toward a mid portion thereof.
  • Figure l is a substantially diagrammatic cross- sectional side view of the spring formation apparatus according to the preferred embodiment of the invention, showing the formation of end portions of the spring with substantially simultaneous heat tempering of the spring prior to completion of formation of the spring;
  • Figure 2 is a substantially diagrammatic side view of the spring formed according to and by the apparatus of Figure 1;
  • Figure 3 is a substantially perspective view from one side and above of an upper portion of the spring of Figure 2.
  • a mattress spring armature spring for mattress manufacture according to "pocketed spring” technology. That is, where a plurality of separate wire compression springs are each engaged into a separate fabric pockets substantially separated from one another, but mounted substantially in position within mattress padding and ticking in accordance with substantially known technology.
  • the spring in resilient wire material and preferably is substantially helically barrel shaped, that is having mid portion of a slightly wider diameter than end portions.
  • the invention is, of course, not limited to this spring configuration.
  • the spring is formed from elongate steel wire material of a type which is suitable for formation by bending and heat tempering, for example by controlled application of an electrical current between spaced apart portions thereof to heat the wire to predetermined temperature prior to controlled cooling.
  • the apparatus and method of the invention is provided upstream of a spring pocketing assembly to facilitate the manufacture of the spring for post- manufacture engagement on a feed conveyor for spring pocketing assemblies as part of a continuous process for spring manufacture, pocketing and mattress spring armature assembly.
  • the spring of the invention is generally indicated by arrow 1 and is preferably formed in suitable mild steel wire material of a type which facilitates easy bending yet heat tempering to create substantially lasting stiffness in the resultant spring 1.
  • the spring 1 is arranged as a helical barrel compression spring having end portions 2 which are arranged into a termination coils to provide a pair of opposingly spaced apart substantially parallel planar load faces for the spring 1.
  • the end portions 2 in the preferred form of the invention are arranged, when completed, to terminate in a deformed portion 3 which is provided in the end portions of the wire from which the spring 1 is formed and which is bent, kinked or otherwise deformed out of the normal helical/annular register of the wire forming the spring 1, inclined inwardly of the spring 1 toward a mid portion thereof.
  • the effect of the above described inclination is such that the deformed portion 3 is orientated in a direction inwardly of the spring 1 from the substantially parallel planar spring end faces and where a tip 3a of the deformed portion 3 is actually faced inwardly of the spring 1 such that upon the spring 1 being compressed on a surface, the tip 3a tends to be directed and spaced away from such surface to resist penetration through said surface.
  • the spring 1 when so formed, the spring 1 can be relatively freely mounted within a mattress and adjacent the pocket fabric, padding and ticking.
  • the effect of compression and any "rotation" of the spring relative to the pocket fabric, padding or ticking will not usually result in penetration of the tip 3a thereinto or, as hitherto has been the case, potential “threading” or “screwing” of a convential “undeformed” (in the sense described hereinbefore) spring 1 upon rotation through the padding or ticking, unless restrained.
  • the spring 1 is preferably formed through a spring coiling head (not shown) , which is so constructed as to convert a continuous wire supply fed through said coiling head into a partially formed helically barrel shaped compression spring. End portions 2 of the spring coil follow in substantially helical register with remaining portions of the wire element forming the spring coil.
  • the spring coil is preferably fed to the forming head as generally indicated by arrow 10 in figure 1 for spring completion and. tempering.
  • the forming head 10 preferably includes a pair of spaced apart base portions 11 preferably formed in an electrically insulative material, for example phenolic reinforced fibrous material, plastics, ceramics and the like.
  • Opposing operational faces 12 of the spaced apart base portions 11 preferably mount guide means 13 thereon, which are spaced apart a distance substantially commensurate with a diameter of the spring end portion 2 to define recesses 14 within which portions of the ends 2 of the spring coil can engage and be slid there along, for example by a pusher, conveyor finger or other assembly (not shown) .
  • the spaced apart base portions 11 each include electrode means 15.
  • the electrode means 15 are connected with a controllable power supply and terminate on the opposing operational faces 12 thereof in strip conductors 16 so that portions of the spring coil end portions 2 impinge there against when engaged in the guides 13.
  • Clamping means 17 are preferably provided to one side of one of the guide means 13, each with a moveable finger member 18 actuable to provide a clamping of portions of said spring coil in said guide 13 to maintain the spring coil in position on the forming means 10, during formation of the deformed portions 3.
  • Deforming means 20 are preferably provided on each base portion 11.
  • the deforming means 20 in the preferred form of the invention are each arranged as an elongate finger means 21, axially rotatable via a rotation arm 22 and longitudinally moveable via a control arm 23 so that elongate finger means 21 can each be bought into and out engagement with one end portion 2 of a spring coil engaged in the forming means, in a particular position.
  • the finger means or clamping means 21 loosely hold the end portion of the spring and, upon rotation, deform the end of the spring.
  • suitable stop means are provided to control the axial orientation and position of the spring coil on the base portions 11 and held by the guide means 13. When so orientated and positioned, the clamping means 17 actuate to hold the spring coil in position and subsequently elongate finger means 21 moves inwardly, engages the portion 3 of the spring 1 end portion 2 within a slotted tip 25 thereof.
  • Axial rotation of the elongate finger means 21, will be seen to deform the end portion 3 of the spring out of helical register with the remaining portions of the spring coil and as hereinbefore described.
  • heat tempering of the spring coil is also undertaken, via a current passed through the spring coil between the electrodes 15.
  • the spring 1 so formed and when cooled in a controlled manner can be substantially stress relieved or annealed and tempered.
  • the apparatus as described with reference to Figure 1 normally positioned upstream of a feeding mechanism for springs 1 to a mattress armature forming assembly. In this way, it will be appreciated that controlled cooling of the springs 1 after heat tempering can occur, either through exposure to ambient air or by virtue of enhanced cooling techniques.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wire Processing (AREA)
  • Heat Treatment Of Articles (AREA)
  • Springs (AREA)
  • Glass Compositions (AREA)

Abstract

Cette invention concerne un ressort ainsi qu'un procédé et un appareil de fabrication de ce ressort. Dans le mode de réalisation préféré de cette invention, les parties terminales (2) sont conçues, une fois réalisées, de manière à constituer l'extrémité d'une partie déformée (3) se situant au niveau des parties terminales du fil métallique à partir duquel le ressort (1) est fabriqué; cette partie déformée (3) est courbée, entortillée ou déformée de tout autre manière par rapport à la configuration normale hélicoïdale/annulaire formant le ressort (1), et recourbée à l'intérieur dudit ressort (1) vers la partie médiane de celui-ci. Ce procédé fait de préférence appel à des systèmes de pinces (17) se trouvant sur un côté de l'un des systèmes de guidage (13). Ces systèmes de pinces (17) possèdent chacun un élément doigt mobile (18) pouvant être actionné afin d'assurer le serrage de parties de la bobine du ressort dans lesdits guides (13), et de maintenir ainsi cette bobine de ressort en place sur un système de formage (10) durant la fabrication des parties déformées (3). Ce procédé fait aussi appel, de préférence, à des systèmes de déformation (20) se trouvant sur chaque partie base (11). Dans le mode préféré de réalisation de cette invention, les systèmes de déformation (20) sont chacun conçus à la manière d'un système de doigt allongé (21) pouvant entrer en rotation axiale grâce à un bras de rotation (22) et se déplacer longitudinalement grâce à un bras de commande (23), de manière à ce que lesdits systèmes de doigt allongés (21) puissent chacun, selon une position particulière, entrer en contact ou se dégager d'une partie terminale (2) d'une bobine de ressort engagée dans le système de formage. Les systèmes de doigt ou systèmes de pinces (21) maintiennent de manière lâche la partie terminale du ressort et déforment l'extrémité du ressort lors de la rotation.
PCT/NZ1996/000051 1995-05-26 1996-05-27 Formation de ressort Ceased WO1996037320A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU58476/96A AU5847696A (en) 1995-05-26 1996-05-27 Spring formation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ27222495 1995-05-26
NZ272224 1995-05-26

Publications (1)

Publication Number Publication Date
WO1996037320A1 true WO1996037320A1 (fr) 1996-11-28

Family

ID=19925274

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ1996/000051 Ceased WO1996037320A1 (fr) 1995-05-26 1996-05-27 Formation de ressort

Country Status (3)

Country Link
AU (1) AU5847696A (fr)
WO (1) WO1996037320A1 (fr)
ZA (1) ZA964251B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798489A3 (fr) * 1996-03-27 1999-04-14 Exedy Corporation Ressort hélicoidal et sa méthode de production
EP0899035A3 (fr) * 1997-08-29 2000-01-05 Frank L Wells Company Procédé et dispositif pour tremper des ressorts helicoidaux
WO2012168508A1 (fr) * 2011-06-06 2012-12-13 Gestarsic, S.L. Ressort pour amortissement directionnel, procédé et dispositif de fabrication de celui-ci
ES2433485A1 (es) * 2012-05-08 2013-12-11 Gestarsic, S.L. Procedimiento de fabricación de un muelle para amortiguación direccionable y dispositivo para la ejecución del mismo

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU406226A (en) * 1926-10-01 1927-10-11 William Edward Elson Improvements in spring mattresses andthe like
US4095623A (en) * 1977-01-29 1978-06-20 E. C. H. Will (Gmbh & Co.) Apparatus for severing and deforming the ends of helical binders for pads or the like
US4147048A (en) * 1976-06-18 1979-04-03 Jacques Herckelbout Machines for the manufacture of springs fitted with eyelets or hooks
AU1597683A (en) * 1982-06-28 1984-01-05 Spuhl A.G. Spring for mattress
EP0160174A2 (fr) * 1984-04-30 1985-11-06 Spühl Ag Machine pour la fabrication de ressorts hélicoidaux
WO1987006987A1 (fr) * 1986-05-16 1987-11-19 Sealy, Incorporated Ressorts en spirale et assemblage de ressorts
US4986103A (en) * 1990-05-08 1991-01-22 Newcomb Spring Corp. Apparatus for coiling springs with tucked ends

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU406226A (en) * 1926-10-01 1927-10-11 William Edward Elson Improvements in spring mattresses andthe like
US4147048A (en) * 1976-06-18 1979-04-03 Jacques Herckelbout Machines for the manufacture of springs fitted with eyelets or hooks
US4095623A (en) * 1977-01-29 1978-06-20 E. C. H. Will (Gmbh & Co.) Apparatus for severing and deforming the ends of helical binders for pads or the like
AU1597683A (en) * 1982-06-28 1984-01-05 Spuhl A.G. Spring for mattress
EP0160174A2 (fr) * 1984-04-30 1985-11-06 Spühl Ag Machine pour la fabrication de ressorts hélicoidaux
WO1987006987A1 (fr) * 1986-05-16 1987-11-19 Sealy, Incorporated Ressorts en spirale et assemblage de ressorts
US4986103A (en) * 1990-05-08 1991-01-22 Newcomb Spring Corp. Apparatus for coiling springs with tucked ends

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798489A3 (fr) * 1996-03-27 1999-04-14 Exedy Corporation Ressort hélicoidal et sa méthode de production
EP0899035A3 (fr) * 1997-08-29 2000-01-05 Frank L Wells Company Procédé et dispositif pour tremper des ressorts helicoidaux
WO2012168508A1 (fr) * 2011-06-06 2012-12-13 Gestarsic, S.L. Ressort pour amortissement directionnel, procédé et dispositif de fabrication de celui-ci
ES2433485A1 (es) * 2012-05-08 2013-12-11 Gestarsic, S.L. Procedimiento de fabricación de un muelle para amortiguación direccionable y dispositivo para la ejecución del mismo

Also Published As

Publication number Publication date
AU5847696A (en) 1996-12-11
ZA964251B (en) 1997-11-27

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