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US20080017271A1 - Spring-Turning Apparatus - Google Patents

Spring-Turning Apparatus Download PDF

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Publication number
US20080017271A1
US20080017271A1 US10/589,146 US58914605A US2008017271A1 US 20080017271 A1 US20080017271 A1 US 20080017271A1 US 58914605 A US58914605 A US 58914605A US 2008017271 A1 US2008017271 A1 US 2008017271A1
Authority
US
United States
Prior art keywords
spring
conveyor
springs
transfer
cassette
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.)
Abandoned
Application number
US10/589,146
Other languages
English (en)
Inventor
Kaspar Haltiner
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.)
Remex AG
Original Assignee
Remex AG
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 Remex AG filed Critical Remex AG
Assigned to REMEX AG reassignment REMEX AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HALTINER, KASPAR
Publication of US20080017271A1 publication Critical patent/US20080017271A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like
    • B21F33/04—Connecting ends of helical springs for mattresses

Definitions

  • the invention relates to a spring-turning apparatus according to the precharacterizing clause of Patent claim 1 . It furthermore relates to a method for forming rows of springs according to the precharacterizing clause of Patent claim 11 and to a spring-transporting apparatus according to the precharacterizing clause of Patent claim 14 .
  • springs are coiled in a spring-coiling machine, are delivered via a spring-turning station to a spring-transporting apparatus and are supplied by the latter to a processing or assembly station where the individual springs are connected to one another.
  • the spring-turning station carries out the task here of delivering the individually finished springs to the transporting apparatus in a manner such that they are oriented in a manner suitable for processing and such that they are precisely positioned.
  • EP-A-0,774,309 discloses a spring-turning apparatus in which the coiling machine delivers the springs in a holding position individually to arms of a multiarmed transporter, the transporting star is rotated in a constant cycle into a delivery position and each spring is placed individually between two revolving continuous loops.
  • the two continuous loops have a vertically running section which merges into a horizontally running section.
  • a spring-transporting conveyor comprising an upper and a lower horizontally running belt conveyor is adjacent to this horizontally running section.
  • the said belt conveyor takes over the spring and supplies it to the processing station.
  • the rotation of the belts that arises in the process has the disadvantage that springs may be displaced.
  • the springs cannot be delivered in any desired rotational position but rather all have the same direction of rotation.
  • WO 2004/011173 discloses a device for orienting springs while being transported from a spring-coiling machine to a spring core mounting machine which comprises a rotating table for the springs.
  • DE-A-199,50,401 discloses a device for rotating the springs which consists of a pivotal centre having three arms.
  • WO 02/38304 discloses a rotatable wheel with receiving pockets, in which the springs are passed on to the conveyor belt in a lying manner.
  • the spring-turning apparatus has a cassette wheel which can be rotated about an axis and has at least one cassette compartment. In a first rotational position of the cassette wheel, a spring can be introduced into the at least one cassette compartment. In a second rotational position, the spring can be delivered to a spring-transporting apparatus, there being a transfer element for the delivery.
  • cassette compartments There are preferably a plurality of cassette compartments, so that, in each case simultaneously, a first cassette compartment is situated in the first position and a second cassette compartment in the second position. As a result, the transfer process can take place without any time delay.
  • the spring-turning apparatus preferably has rotary plates between which a spring can be held in each case.
  • each spring can be rotated individually into its desired rotational position before it is delivered to the spring-transporting apparatus.
  • each spring can be rotated individually through a desired angle. This enables rows of springs to be formed, the outer springs of which are always oriented in such a manner that their free ends are directed towards the adjacent rows and therefore cannot protrude outwards. This orientation prevents free ends of the springs from being able to damage the cushion or padding covers.
  • these rotary plates are situated in a transfer unit which is arranged between a multiarmed transporting star and the cassette wheel.
  • This transfer unit is preferably arranged pivotably, so that it can bridge the distance between the transporting star and cassette wheel during the delivery of the springs.
  • the springs can be positioned in a relatively precise manner in the rotary cassette, thus enabling the delivery to the spring-transporting apparatus to take place with the same precision.
  • a further advantage is that the cassette requires a relatively small amount of space and the size of the system is therefore minimized.
  • the springs are supplied individually and are delivered at a lower delivery point to a spring conveyor, the relative position of this lower delivery point with respect to the spring conveyor being changed.
  • This changing of the position preferably takes place by means of an intermediate or transfer conveyor which, in the delivery region, runs parallel and adjacent to the spring conveyor.
  • an intermediate or transfer conveyor which, in the delivery region, runs parallel and adjacent to the spring conveyor.
  • this type of transfer makes it possible for the springs to be able to be positioned relatively precisely on the transfer conveyor. This precision is taken on by the spring conveyor, so that a later orientation of the springs shortly before or during their delivery to a processing or assembly station can be omitted.
  • FIG. 1 shows a view from above of the turning apparatus according to the invention and of the units adjoining it;
  • FIG. 2 shows a perspective view of the turning apparatus according to FIG. 1 including the spring-transporting apparatus
  • FIG. 3 a shows a side view of the transfer unit according to FIG. 2 in a depositing position
  • FIG. 3 b shows the transfer unit according to FIG. 3 a in a delivery position
  • FIG. 4 shows the elements according to FIG. 1 from the side
  • FIGS. 5 a to 5 f show schematic illustrations of the delivery of spring to the transporting device in six steps.
  • FIG. 1 illustrates a turning apparatus according to the invention.
  • Springs F which are supplied by a spring-coiling machine (not illustrated) are grasped individually by a transporting star 1 .
  • the transporting star 1 has a plurality of gripping arms 10 , only one of these gripping arms 10 being illustrated in FIG. 1 .
  • the gripping arm 10 has a clip 11 in which the spring F can be held in a fixed manner.
  • the transporting star 1 rotates about its axis, as a result of which the springs F, which are held individually, pass through finishing stations. For example, an end ring is bent towards them in a first rotational position or the spring is bound together, and in a second rotational position they are hardened, for example.
  • the gripping arm 10 delivers the spring F to a transfer unit 2 .
  • This transfer unit 2 is mounted pivotably and pushes the spring F into a cassette compartment 30 of a cassette wheel 3 .
  • Rotation of the cassette wheel 3 about a central axis 31 causes the spring F to be rotated from its previous horizontal, lying orientation into a vertical, standing orientation and to be brought to a spring-transporting apparatus T.
  • a transfer element or delivery means 32 pushes the spring F, which is now standing, into the spring-transporting apparatus T from where it is conveyed into the processing and assembly station (not illustrated in the figures).
  • the spring-transporting apparatus T is explained once again in more detail later on in the text with reference to FIGS. 1 and 4 .
  • the turning apparatus according to the invention is discussed first.
  • the transfer unit 2 has two mutually opposite clamping plates 20 . They are preferably arranged at an angle to each other at least in their region directed towards the direction of movement of the transporting star 1 , so that they form an opening which slightly expands in this direction. In this embodiment, the opening is directed downwards.
  • Rotary plates 21 the surfaces of which are aligned with the inner surface of the clamping plates 20 , are embedded in the clamping plates 20 .
  • the transfer unit 2 furthermore has at least one, preferably two, transfer elements in the form of pivoting flags 22 .
  • Each pivoting flag 22 has a pivotable arm 220 and a sliding plate 221 , which is arranged on it and is slit in a V-shaped manner.
  • the shape of the sliding plate 221 can be adapted or selected in accordance with the shape of the springs F.
  • FIGS. 3 a and 3 b illustrate the two extreme positions of the transfer unit 2 . These can also be seen in FIG. 2 , the movement of the transfer unit 2 being indicated here by an arrow and the second extreme position only being illustrated by chain-dotted lines.
  • the said transfer unit In the position according to FIG. 3 a , the said transfer unit is situated in the rear position remote from the cassette wheel 3 . In this position, the spring F is delivered to the transfer unit 2 by rotation of the transporting star 1 .
  • FIG. 3 a the front end of the gripping arm 10 can be seen.
  • the arrow shows the direction of movement of the gripping arm 10 and the spring F, which is illustrated by dashed lines, or the gripping arm 10 , which is illustrated by dashed lines, shows the position at which the spring F is released by the clip 11 and is clamped between the two clamping plates 20 or between the two rotary plates 21 . In this position, the spring F is slightly pressed together and is therefore held resiliently.
  • the transfer unit 2 is now pivoted about its axis 23 towards the cassette wheel 3 .
  • the spring F can be brought by means of rotation of the rotary plates 21 via servomotors into any desired rotational position. This rotation does not have to take place during each transfer of a spring F; rather, it depends on the type and ensuing position of the spring in the finished padding. For example, each spring which, in the finished padding, comes to rest at one end of a row can be rotated in such a manner that its free end is directed towards the row.
  • the rotary plates, and also all of the other elements, described previously and below, of the transporting star, of the turning apparatus and of the spring conveyor are driven and controlled preferably in accordance with a common, central control.
  • the movements of the transporting star 1 , of the transfer unit 2 and of the cassette wheel 3 preferably take place cyclically during the cycle of the spring-coiling machine.
  • each cassette compartment 30 has two opposite walls between which the spring F is held under compression.
  • the cassette wheel 3 rotates about its central axis 31 in the direction of the arrow, so that the spring F can be brought into a position rotated through 90°. In this position, they are delivered individually to the spring-transporting apparatus T.
  • the cassette wheel 3 has at least one transfer element 32 .
  • Each cassette compartment 30 preferably has its own transfer element 32 .
  • the sliding arm 32 is mounted pivotably about the axis 33 . If the cassette compartment 30 has reached the desired rotational position, the sliding arm 32 is activated and the spring F is pushed out of the cassette compartment 30 into a transfer conveyor 4 .
  • This transfer conveyor 4 has a lower transfer conveyor belt 40 and an upper transfer conveyor belt 41 .
  • the two belts are endlessly revolving conveyors which are, however, preferably operated synchronously with each other.
  • FIG. 4 illustrates the respective first deflection pulleys 42 and the second deflection pulleys 43 around which the conveyor belts 40 , 41 revolve.
  • This transfer conveyor 4 is preferably operated by means of servomotors and preferably operates cyclically. However, other types of operation are possible. For example, the transfer conveyor may also be operated continuously.
  • the individual springs F are slightly compressed by means of the second belt conveyors 40 , 41 and are therefore transported, held under compression, by means of the transfer conveyor 4 in the direction of the arrow.
  • the transfer conveyor 4 runs parallel, at at least approximately the same height as and adjacent to a spring conveyor 6 . It extends at least in some sections, namely in the region of the upper and lower delivery points A, B, parallel to the spring conveyor 6 .
  • the spring conveyor 6 preferably likewise comprises two revolving, synchronously operated belt conveyors, the upper spring conveyor belt in FIG. 4 being provided with the reference number 60 and the lower belt being provided with the reference number 61 .
  • the first deflection pulleys 62 can be seen in FIG. 4 , the second deflection pulleys are not illustrated.
  • Springs F which are situated on the spring conveyor 6 are likewise fixed between the two belts by resilient clamping and are transported in the direction of the arrow.
  • the drive of the spring conveyor 6 is preferably cyclic. A servomotor may be used for this. However, it is also possible to couple the spring conveyor 6 mechanically to the spring-coiling machine and to operate it in the same cycle.
  • the transfer of the individual springs F from the transfer conveyor 4 onto the spring conveyor 6 preferably takes place by means of a change unit 5 .
  • the change unit 5 has a pivoting frame 50 with vertically running legs 51 and a horizontally running guide rod 52 arranged between the legs.
  • a second delivery means in the form of a clamp 53 is arranged in a laterally displaceable manner on this guide rod 52 .
  • the clamp 53 has, at its free end facing the transfer conveyor 4 , a stop surface 54 which runs at least approximately perpendicularly to the conveying direction of the transfer conveyor 4 and which is directed towards that delivery point A of the transfer conveyor 4 which is at the top in the conveying direction.
  • the clamp 53 is displaced along the guide rod 52 by means of a motor as determined by the central control.
  • the drive or deflection pulley 55 used for this and the revolving toothed belt 56 are illustrated in FIG. 4 by chain-dotted lines.
  • the transfer conveyor 4 After a spring F has been pushed from the cassette wheel 3 onto the transfer conveyor 4 , the transfer conveyor 4 is moved at a relatively high speed in the direction of the arrow until the spring F reaches the clamp 53 or a position predetermined by the control. The transfer conveyor 4 is stopped again and the clamp 53 is pivoted in the direction of the spring conveyor 6 by means of the pivoting frame 50 . As a result, the spring F is delivered at a lower delivery position B from the transfer conveyor 4 to the spring conveyor 6 . During this delivery, the two conveyors 4 , 6 are preferably at a standstill. The spring conveyor 6 then continues in its customary cycle and the transfer conveyor 4 takes over the next spring F supplied by the cassette wheel 3 and conveys it to the clamp 53 . In the meantime, the clamp 53 , owing to its lateral displaceability, can now move to a different lower delivery position B relative to the spring conveyor 6 .
  • the transfer conveyor 4 is not completely stopped, rather continues to run at a reduced speed during the transfer.
  • the spring F is kept in its position owing to the stop surface 54 .
  • the transfer conveyor 4 is being always operated in the same cycle. Thereby its velocity is several times higher than the velocity of the spring conveyor 6 .
  • the transfer conveyor drives further than the actual delivery point B.
  • the clamp 53 stops the spring F at the lower delivery point B, so that the transfer conveyor 4 drags under the spring F. It waits in that position until the spring conveyor 6 reaches its desired position. If that is the case, the spring F will be delivered to the spring conveyor 6 .
  • the frequencies of the conveyors 4 , 6 are such, that during the delivery at least the spring conveyor 6 , preferably also the conveyor 4 , stand still between two cycles.
  • Only one single spring F is preferably ever situated on the transfer conveyor 4 .
  • it is also possible to transport two or more springs F simultaneously on the transfer conveyor 4 since the conveying speed of the transfer conveyor 4 relative to the conveying speed of the spring conveyor 6 can be selected freely.
  • FIGS. 5 a to 5 f schematically illustrate a delivery of the springs.
  • a first spring F 1 has been delivered to the transfer conveyor 4 .
  • FIG. 5 b it has been transported to the clamp 53 and waits in a first lower delivery point B 1 for its transfer.
  • a second spring F 2 is already waiting for its delivery.
  • FIG. 5 c the first spring F 1 has been delivered to the spring conveyor 6 and the transfer element 52 has been pivoted towards the second spring F 2 .
  • this second spring F 2 is now delivered to the transfer conveyor 4 .
  • the spring conveyor 6 has continued to move in an ever constant cycle.
  • the individual springs are pushed directly from the cassette compartment 30 between the belts of the spring conveyor 6 .
  • the spring conveyor 6 can be operated by means of a servomotor.
  • the spring F it is possible to deliver the spring F to a conveyor apparatus configured in a different manner.
  • the transfer of the individual springs from the transfer conveyor to the spring conveyor takes place as described above, the delivery of the springs to the transfer conveyor is obtained with a means other than the rotary cassette.
  • the spring-turning apparatus increases the flexibility in the delivery of springs from a spring-coiling machine into a processing station.
  • the method according to the invention for forming rows of springs and the spring-transporting apparatus according to the invention permit a flexible arrangement of the springs while at the same time minimizing operational breakdowns of the machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
US10/589,146 2004-02-13 2005-02-11 Spring-Turning Apparatus Abandoned US20080017271A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH229/04 2004-02-13
CH2292004 2004-02-13
PCT/CH2005/000078 WO2005077563A1 (fr) 2004-02-13 2005-02-11 Dispositif pour tourner des ressorts

Publications (1)

Publication Number Publication Date
US20080017271A1 true US20080017271A1 (en) 2008-01-24

Family

ID=34842443

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/589,146 Abandoned US20080017271A1 (en) 2004-02-13 2005-02-11 Spring-Turning Apparatus

Country Status (3)

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US (1) US20080017271A1 (fr)
EP (1) EP1713599A1 (fr)
WO (1) WO2005077563A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8720872B2 (en) 2011-01-20 2014-05-13 Sealy Technology, Llc Innersprings with alternating coil spring orientations
WO2017074273A1 (fr) 2015-10-21 2017-05-04 Veysel Kütüklü Mak. San. Ve Tic A. Ş Machine de production de ressorts, d'alignement des ressorts dans une rangée, de jonction des ressorts les uns aux autres et de formation d'un cadre à ressorts
US10598242B2 (en) 2016-05-20 2020-03-24 Sealy Technology, Llc Coil springs with non-linear loading responses and mattresses including the same
CN112059076A (zh) * 2019-07-24 2020-12-11 刘锋 弹簧结点定位结构
US11033114B2 (en) 2015-12-17 2021-06-15 Sealy Technology, Llc Coil-in-coil spring with variable loading response and mattresses including the same
US11051631B2 (en) 2016-01-21 2021-07-06 Sealy Technology, Llc Coil-in-coil springs with non-linear loading responses and mattresses including the same
US11076705B2 (en) 2014-05-30 2021-08-03 Sealy Technology, Llc Spring core with integrated cushioning layer
US12127679B2 (en) 2017-10-31 2024-10-29 Sealy Technology, Llc Pocket coil spring assembly including flexible foam

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2801420T3 (pl) * 2013-05-10 2019-01-31 Spühl Ag Urządzenie przenoszące sprężyny i sposób przenoszenia sprężyn

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1063960A (en) * 1909-05-29 1913-06-10 Diamond Match Co Box-filling machine.
US1316160A (en) * 1919-09-16 Sheet
US1858010A (en) * 1930-01-09 1932-05-10 Hartford Empire Co Ware stacking mechanism
US2248376A (en) * 1940-04-01 1941-07-08 Maywood Glass Co Conveyer system
US3386561A (en) * 1966-07-12 1968-06-04 Spuehl Ag Machines for manufacturing spring interiors
US3771648A (en) * 1971-04-07 1973-11-13 A Revuelta Chain system for the selection and separation of objects
US3774652A (en) * 1972-01-21 1973-11-27 Wells F Co Spring transfer apparatus
US4792035A (en) * 1980-08-04 1988-12-20 Frank L. Wells Company Coil spring feeding apparatus or machine
US5579810A (en) * 1995-03-03 1996-12-03 L&P Property Management Company Coil spring interior assembly method and apparatus
US6845861B2 (en) * 2002-08-08 2005-01-25 G.D.Societa' Per Azioni Packet conveying assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905537A1 (de) * 1979-02-14 1980-08-28 Spuehl Ag Vorrichtung zum zufuehren einer mehrzahl von drahtfedern zu einer federkern-montagemaschine
CH693142A5 (de) * 1998-12-24 2003-03-14 Spuehl Ag St Gallen Vorrichtung zum Drehen von auf einer Federwindemaschine hergestellten Federn.
CH694635A5 (de) * 2000-11-10 2005-05-13 Spuehl Ag St Gallen Verfahren und Anlage zum Transport von Federn für Federkerne für Matratzen oder Polster.
CH696028C1 (de) * 2002-07-26 2009-09-30 Spuehl Ag St Gallen Vorrichtung zum Ausrichten von Federn.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1316160A (en) * 1919-09-16 Sheet
US1063960A (en) * 1909-05-29 1913-06-10 Diamond Match Co Box-filling machine.
US1858010A (en) * 1930-01-09 1932-05-10 Hartford Empire Co Ware stacking mechanism
US2248376A (en) * 1940-04-01 1941-07-08 Maywood Glass Co Conveyer system
US3386561A (en) * 1966-07-12 1968-06-04 Spuehl Ag Machines for manufacturing spring interiors
US3771648A (en) * 1971-04-07 1973-11-13 A Revuelta Chain system for the selection and separation of objects
US3774652A (en) * 1972-01-21 1973-11-27 Wells F Co Spring transfer apparatus
US4792035A (en) * 1980-08-04 1988-12-20 Frank L. Wells Company Coil spring feeding apparatus or machine
US5579810A (en) * 1995-03-03 1996-12-03 L&P Property Management Company Coil spring interior assembly method and apparatus
US6845861B2 (en) * 2002-08-08 2005-01-25 G.D.Societa' Per Azioni Packet conveying assembly

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8720872B2 (en) 2011-01-20 2014-05-13 Sealy Technology, Llc Innersprings with alternating coil spring orientations
US11076705B2 (en) 2014-05-30 2021-08-03 Sealy Technology, Llc Spring core with integrated cushioning layer
US12048380B2 (en) 2014-05-30 2024-07-30 Sealy Technology, Llc Spring core with integrated cushioning layer
WO2017074273A1 (fr) 2015-10-21 2017-05-04 Veysel Kütüklü Mak. San. Ve Tic A. Ş Machine de production de ressorts, d'alignement des ressorts dans une rangée, de jonction des ressorts les uns aux autres et de formation d'un cadre à ressorts
US11033114B2 (en) 2015-12-17 2021-06-15 Sealy Technology, Llc Coil-in-coil spring with variable loading response and mattresses including the same
US11051631B2 (en) 2016-01-21 2021-07-06 Sealy Technology, Llc Coil-in-coil springs with non-linear loading responses and mattresses including the same
US10598242B2 (en) 2016-05-20 2020-03-24 Sealy Technology, Llc Coil springs with non-linear loading responses and mattresses including the same
US10935098B2 (en) 2016-05-20 2021-03-02 Sealy Technology, Llc Coil springs with non-linear loading responses and mattresses including the same
US12127679B2 (en) 2017-10-31 2024-10-29 Sealy Technology, Llc Pocket coil spring assembly including flexible foam
CN112059076A (zh) * 2019-07-24 2020-12-11 刘锋 弹簧结点定位结构

Also Published As

Publication number Publication date
WO2005077563A1 (fr) 2005-08-25
EP1713599A1 (fr) 2006-10-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: REMEX AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HALTINER, KASPAR;REEL/FRAME:019020/0057

Effective date: 20061010

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION