EP0774310A1 - Dispositif de transfert de ressorts à une machine d'assemblage - Google Patents

Dispositif de transfert de ressorts à une machine d'assemblage Download PDF

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Publication number
EP0774310A1
EP0774310A1 EP96117839A EP96117839A EP0774310A1 EP 0774310 A1 EP0774310 A1 EP 0774310A1 EP 96117839 A EP96117839 A EP 96117839A EP 96117839 A EP96117839 A EP 96117839A EP 0774310 A1 EP0774310 A1 EP 0774310A1
Authority
EP
European Patent Office
Prior art keywords
spring
springs
belt
transfer device
slide
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
EP96117839A
Other languages
German (de)
English (en)
Other versions
EP0774310B1 (fr
Inventor
Hans Knöpfel
Siegfried Grüninger
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.)
Spuehl AG
Original Assignee
Spuehl 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 Spuehl AG filed Critical Spuehl AG
Publication of EP0774310A1 publication Critical patent/EP0774310A1/fr
Application granted granted Critical
Publication of EP0774310B1 publication Critical patent/EP0774310B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 transfer device for springs to an assembly machine according to the preamble of claim 1.
  • Machines of this type are used to feed a finished spring to a device in a manner suitable for processing and in the correct position, in which device the springs are mounted to form a spring core, a cushion or a seat cushion.
  • the spring produced in this station is placed in the respective gripping hand of the transport star and gripped there and fed for further processing.
  • the subsequent spring insertion station works in such a way that swivel jaws were present in the outlet area of the respective gripping hand of the transport star, which swivel jaws received the spring between them, the spring being inserted into these swivel jaws from the gripping hand of the transport star.
  • the pivoting movement of the receiving jaws in the area of the spring insertion station had the disadvantage, however, that the spring inserted there in the spring insertion station could never be positioned precisely enough. This was associated with the disadvantage that the spring had to be aligned precisely over a larger number of subsequent straightening stations, which was associated with increased machine expenditure.
  • the purpose of the present invention is to To create a transfer device with which it is possible to feed springs to a downstream assembly machine in the simplest possible way, rows arranged one behind the other and arranged at individual distances from one another.
  • the invention is characterized in that the transfer device consists of a series of sliders, each slider consisting of an upper and a lower slider end, the respective free ends of the upper and lower slider ends on the associated end turns of the the slider ends are preferably spring biased against each other.
  • Such a slide device is to synchronize rows of springs arranged one behind the other in a band gap of two synchronously driven band loops, i. H. For example, to record up to 40 springs and to transport them out of the belt transversely to the direction of belt transport in order to guide these springs into the gripper gap of the downstream upper and lower assembly pliers.
  • the slide ends are spring-loaded against one another in the direction of the longitudinal axis of the spring.
  • the slider arrangement with these prestressed engages in the gap between the mutually associated runs of the belt loops and is prestressed against the upper and lower straps with spring tension. In this way, a secure engagement of the slide ends on the upper and lower end turns of the spring to be displaced is achieved.
  • each slide block forms an approximately vertical contact surface for contact with the associated end turn of the spring in order to achieve a secure and full contact with the respective end turn.
  • the invention provides that the slider assembly can be attached to the end windings of the springs from the outset and the slider assembly can be spring-loaded on the end turn so that the end windings are positioned correctly and securely in the gripping gap from the top and bottom without the risk of deformation or friction lower pliers can be transferred.
  • the slide arrangement is arranged in direct alignment with the mounting device, so that a height offset can be eliminated.
  • the slide arrangement must first remove the springs from the Bring the area to an appropriate transport belt, the springs z. B. lift vertically to feed the springs of an assembly machine on a second, vertically arranged level.
  • the slides are driven synchronously via a corresponding swivel device.
  • a motor or another rotary drive is used, the rotary movement of which is converted into a linear displacement movement of the slide via a corresponding transmission linkage.
  • this rotary drive can be dispensed with, and the slides can be moved directly via an associated, linear displacement drive.
  • the distance between the individual slides is individually adjustable.
  • the slides are arranged on a corresponding holder and are arranged on this holder in the transport direction of the belt and in the opposite direction so that they can be moved and locked.
  • the individual distance between the springs can be simulated by the corresponding displaceable and fixable holder of the associated slide, so that each spring is assigned a corresponding slide at the corresponding position.
  • the springs are thus immediately aligned in the correct position and position, z. B. inserted in the horizontal plane in the assembly machine.
  • the working direction of the present slide device is not mandatory. It can also be provided that the slides work in the vertical direction and the assembly machine also takes over these springs in the vertical direction.
  • a transport star consists of a multi-armed gripper mechanism which has a series of gripping hands 18, a corresponding spring 26 being inserted in each gripping hand 18 and held there in a clamping manner.
  • the gripping hand 18 introduces the spring 26 into a spring insertion station 2.
  • this spring After inserting and aligning the spring 26 in the spring insertion station 2, this spring is fed to a turning station 3, the spring being rotated from a horizontal position into a vertical position.
  • a first straightening station 4 is arranged at the outlet of the turning station, which, as a control straightening station, only checks whether the node 38 of the spring 26 has been correctly positioned in the spring insertion station 2.
  • a further straightening station 5 ensures that the last spring of the previous row is taken out of a row of springs arranged one behind the other in the area of the belt loops 8, 9, turned and reinserted as the first spring of the following row into the belt gap of the belt loops 8, 9 becomes.
  • a transfer device 6 Arranged behind the straightening station 5 is a transfer device 6, in which the springs are aligned in the correct position, one after the other, in the correct position and which are then transferred with a cross slide system into an assembly machine arranged transversely to the belt loops 8, 9.
  • the synchronous drive of the belt loops 8, 9 is carried out by a belt drive 7, which is shown in more detail in FIG.
  • the only central drive is present which drives two synchronously driven drive shafts 10, 11 via a gear.
  • a toothed belt 12, 13 runs over each drive shaft 10, 11 and drives a deflection roller 14, 15 in each case without slip.
  • the belt loop 8 and 9 is guided over the respective deflection roller 14, 15.
  • Each belt loop consists of an upper and lower strand, and the spring 26 to be inserted is inserted between the mutually facing strands of these belt loops 8, 9.
  • the belt drive 7 is freely programmable, the drive motor also being able to be designed as a stepper motor, and it is thus possible to set the exact and different distance between the springs at the same insertion speed of the transport star 1 into the belt by appropriate variation of the belt drive.
  • the two belt loops 8, 9 run over front deflection rollers 16, 17 and are deflected there.
  • FIG. 3 shows a perspective side view of a transfer arrangement 6.
  • the springs 26 are held in the belt gap between the belt loops 8, 9, which are driven synchronously with one another, and are transported in the transport direction 40.
  • the transfer device 6 essentially consists of a motor 19 or another rotary drive, the axis of rotation of which is connected in a rotationally fixed manner to a crank 20.
  • the drive shaft of the motor 19 is also connected in a rotationally fixed manner to a connecting rod 25, which connecting rod is held in a machine-fixed and rotatable manner at the opposite end in the region of a rotary bearing 27.
  • crank 20 The free, pivotable end of the crank 20 is provided with a crank pin 21 which is freely displaceable in an elongated hole 22 in a lever 23.
  • This lever 23 is rotatably mounted in a fixed pivot bearing 24.
  • the free, upper end of the lever 23 is rotatably connected to a sliding flange 29 by a connecting pin 28.
  • a sliding flange 29 At the front, free end of the sliding flange 29, the slider 30 and 31 are fastened in the region of a holder 34. It has already been mentioned at the beginning that this holder 34 makes it possible to move and determine the slides 30 and 31 in the transport direction 40 and in the opposite direction on the slider flange 29.
  • Each slide consists of a spring steel sheet or another resilient, essentially U-shaped part, at the free ends of which a slide block 32, 33 is arranged.
  • This slide block 32, 33 is preferably made of plastic and has a front, approximately vertically directed slide edge with which this slide block lies against the outer circumference of the respective upper and lower end turn of the respective spring 26.
  • the belt loops 8, 9 are additionally guided through a guide plate 37 and through a guide plate 39.
  • the distance between the belt loops 8, 9 and from the guide plates 41, 42 arranged next to the belt loops 8, 9 can be adapted to one another to different heights or lengths of the springs to be processed. This adaptation is known to the person skilled in the art and is therefore not shown further. The same applies to the distance between the downstream assembly pliers 43, 44.
  • the entire slide device is then rotated in the arrow direction 47 by switching on the drive 19, so that the slide flange 29 executes a linear displacement movement in the arrow direction 35 and in this case the entire row of springs (spring assembly) in the arrow direction 35 from the band gap via correspondingly aligned guide plates 41, 42 moves and pushes the end turns directly into the area of the upper and lower assembly pliers 43, 44 of the downstream assembly machine.
  • inlet area of the assembly tongs 43, 44 there are associated inlet slopes 49, 50 which are directed obliquely towards one another. In this way it is ensured that when moving into these assembly pliers 43, 44 the spring is compressed more strongly in the direction of its longitudinal axis, in order to then snap the spring apart after overcoming the run-in bevels 49, 50 and snap into the corresponding receiving opening of the assembly pliers 43, 44 to bring.
  • the downstream assembly machine takes over the entire spring assembly and assembles this spring assembly into a mattress, a mattress core or an upholstery core,
  • crank loop has the advantage that there is a very low speed of the spring at the point of insertion of the respective spring 26 via the inlet slopes 49, 50, but a high force for this, so that the springs can be inserted very securely into the receiving openings of the assembly pliers 43, 44.
  • the present invention provides a simple and precise possibility with individual distances to feed springs arranged to one another to a downstream assembly machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
  • Automatic Assembly (AREA)
  • Special Conveying (AREA)
  • Wire Processing (AREA)
  • Intermediate Stations On Conveyors (AREA)
EP96117839A 1995-11-17 1996-11-07 Dispositif de transfert de ressorts à une machine d'assemblage Expired - Lifetime EP0774310B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19542844A DE19542844A1 (de) 1995-11-17 1995-11-17 Transfereinrichtung für Federn zu einer Montagemaschine
DE19542844 1995-11-17

Publications (2)

Publication Number Publication Date
EP0774310A1 true EP0774310A1 (fr) 1997-05-21
EP0774310B1 EP0774310B1 (fr) 2000-03-22

Family

ID=7777686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117839A Expired - Lifetime EP0774310B1 (fr) 1995-11-17 1996-11-07 Dispositif de transfert de ressorts à une machine d'assemblage

Country Status (5)

Country Link
US (1) US5788051A (fr)
EP (1) EP0774310B1 (fr)
JP (1) JP3313596B2 (fr)
DE (2) DE19542844A1 (fr)
ES (1) ES2145962T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9670053B2 (en) 2009-10-27 2017-06-06 Spuehl Ag Apparatus and method for transferring springs with transport wheel

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH693142A5 (de) * 1998-12-24 2003-03-14 Spuehl Ag St Gallen Vorrichtung zum Drehen von auf einer Federwindemaschine hergestellten Federn.
CH692914A5 (de) * 1998-12-24 2002-12-13 Spuehl Ag St Gallen Vorrichtung zum Überführen einer aufrechtstehenden schraubenlinienförmig gewundenen Feder.
DE10063913A1 (de) * 2000-12-20 2002-07-04 Agro Federkernprod Gmbh Verfahren zur Herstellung eines Federkerns mit unterschiedlichen Festigkeitszonen
CH696028C1 (de) * 2002-07-26 2009-09-30 Spuehl Ag St Gallen Vorrichtung zum Ausrichten von Federn.
US20070169832A1 (en) * 2004-03-04 2007-07-26 Remex Ag Method and device for transferring springs into an assembler
WO2016094501A1 (fr) * 2014-12-09 2016-06-16 Ümit Elektronik Makina Sanayi Ve Ticaret A.S. Dispositifs d'enroulement de ressorts à têtes multiples et leurs procédés d'utilisation
CN104885665B (zh) * 2015-06-16 2017-01-25 江苏大学 一种用于半自动移栽机的钵苗自动喂苗机构
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
CN108203069B (zh) * 2017-03-27 2024-04-09 浙江华剑智能装备股份有限公司 弹簧方位调整装置
CN108792444A (zh) * 2018-06-27 2018-11-13 苏州市蓄动源自动化科技有限公司 一种用于电子产品生产的传输装置
CN114194793B (zh) * 2022-02-16 2022-05-17 常州铭赛机器人科技股份有限公司 伸缩式推料装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887215A (en) * 1929-09-20 1932-11-08 Owen Automatic Spring Machiner Spring forming and assembling machine
US2862630A (en) * 1952-08-08 1958-12-02 Wunderlich Spring Machinery Co Stacker mechanism for coil springs
GB813117A (en) * 1955-08-05 1959-05-06 Frederick Gray Hodges Jr Apparatus for making spring units for mattresses, cushions and the like
GB911398A (en) * 1960-11-23 1962-11-28 Spuehl Ag A device for stacking or uniformly enmeshing coil or helical springs
US3774652A (en) 1972-01-21 1973-11-27 Wells F Co Spring transfer apparatus
DE3416110C2 (de) 1984-04-30 1986-10-02 Spühl AG, St. Gallen Maschine zur Erzeugung von Schraubenfedern

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948754A (en) * 1929-10-24 1934-02-27 Simmons Co Manufacturing spring assemblies
US2878919A (en) * 1955-02-16 1959-03-24 R A Jones And Company Inc Article metering apparatus
GB1152072A (en) * 1966-07-12 1969-05-14 Spuehl Ag Improvements in Machines for Manufacturing Spring Interiors
US3441064A (en) * 1967-07-19 1969-04-29 Kay Mfg Corp Means and method for separating and transferring nested coil springs
GB1461671A (en) * 1974-01-10 1977-01-19 Elson Robbins Ltd Mattress making machinery
DE2923211A1 (de) * 1979-06-08 1980-12-11 Spuehl Ag Zentriervorrichtung an einer federkernmontagemaschine
DE3101014C2 (de) * 1981-01-15 1984-08-09 Spühl AG, St. Gallen Vorrichtung zum Zuführen von schraubenlinienförmigen Drahtfedern von mindestens einer Federwindemaschine zu einer Federkernmontagemaschine
US4492298A (en) * 1981-09-10 1985-01-08 Leggett & Platt, Incorporated Coil spring assembly machine
US4724590A (en) * 1986-12-22 1988-02-16 Hartco Company Apparatus and method for automatically securing borderwires on mattress innersprings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887215A (en) * 1929-09-20 1932-11-08 Owen Automatic Spring Machiner Spring forming and assembling machine
US2862630A (en) * 1952-08-08 1958-12-02 Wunderlich Spring Machinery Co Stacker mechanism for coil springs
GB813117A (en) * 1955-08-05 1959-05-06 Frederick Gray Hodges Jr Apparatus for making spring units for mattresses, cushions and the like
GB911398A (en) * 1960-11-23 1962-11-28 Spuehl Ag A device for stacking or uniformly enmeshing coil or helical springs
US3774652A (en) 1972-01-21 1973-11-27 Wells F Co Spring transfer apparatus
DE3416110C2 (de) 1984-04-30 1986-10-02 Spühl AG, St. Gallen Maschine zur Erzeugung von Schraubenfedern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9670053B2 (en) 2009-10-27 2017-06-06 Spuehl Ag Apparatus and method for transferring springs with transport wheel

Also Published As

Publication number Publication date
DE59604752D1 (de) 2000-04-27
DE19542844A1 (de) 1997-05-22
EP0774310B1 (fr) 2000-03-22
ES2145962T3 (es) 2000-07-16
US5788051A (en) 1998-08-04
JP3313596B2 (ja) 2002-08-12
JPH09225751A (ja) 1997-09-02

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