EP0211242B1 - Machine à enrouler des ressorts - Google Patents

Machine à enrouler des ressorts Download PDF

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Publication number
EP0211242B1
EP0211242B1 EP86109100A EP86109100A EP0211242B1 EP 0211242 B1 EP0211242 B1 EP 0211242B1 EP 86109100 A EP86109100 A EP 86109100A EP 86109100 A EP86109100 A EP 86109100A EP 0211242 B1 EP0211242 B1 EP 0211242B1
Authority
EP
European Patent Office
Prior art keywords
spring
wire
coiling machine
knife
drive
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
Application number
EP86109100A
Other languages
German (de)
English (en)
Other versions
EP0211242A3 (en
EP0211242A2 (fr
Inventor
Max Frei
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.)
SCHENKER MASCHINEN AG
Original Assignee
SCHENKER MASCHINEN 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 SCHENKER MASCHINEN AG filed Critical SCHENKER MASCHINEN AG
Publication of EP0211242A2 publication Critical patent/EP0211242A2/fr
Publication of EP0211242A3 publication Critical patent/EP0211242A3/de
Application granted granted Critical
Publication of EP0211242B1 publication Critical patent/EP0211242B1/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
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically

Definitions

  • the present invention relates to a spring winding machine with the wire-feeding transport rollers which can be driven in the machine cycle, the coiled springs at the end of the winding process being separated from the wire in a flying cut by a knife which can be moved on a circular path and which crosses the feed path of the wire will.
  • a spring coiling machine is known on the market (see brochure from SIMPLEX RAPID: "Spring winding machine with flying parting device, complete with automatic central lubrication, type A / 2-S / 60 A / 2-S / 93 A / 200) at The wire is fed at a constant speed and the finished spring is cut with a rotating knife in a flying cut without the wire feed being braked for this purpose.
  • the wire length of the spring is determined by the point in time at which a single-speed clutch is engaged, which sets the knife in the circular cutting movement and stops after one turn. At high production rates, this single-speed clutch is subject to high wear and tear and the limitation of the switching frequency also limits the production speed of the spring coiling machine. Since the transport rollers run at a constant rotational speed, there is a further disadvantage that the pitch tool has to perform a relatively fast movement in the case of compression springs with adjacent end windings. This also limits the production output.
  • a device in which the wire is advanced step by step.
  • the step drive required for this has a linearly movable back and forth drive element which drives the transport rollers via two oppositely acting one-way clutches.
  • the transport rollers are not driven by the same number of gears when the drive element is advanced as during the return.
  • a reversing gear is arranged in one of the two gear trains so that the pairs of transport rollers always have the same direction of rotation, regardless of the direction of movement of the drive element.
  • This known device therefore has a total play in the gear train to the transport rollers during the advance of the drive element, which is different from that during the return, which results in different wire feed lengths.
  • the object of the present invention is to improve a spring winding machine of the type mentioned at the outset in such a way that the machine output can be increased significantly.
  • this object is achieved in that in a spring coiling machine of the type mentioned at the outset, the transport rollers are driven with a stepping drive for the gradual advancement of the wire, and in that the knife crosses the advancement path at the end of a advancement step when the advancement speed is at least approximately zero.
  • the stepper drive has a linearly displaceable drive element which drives the transport rollers via two counter-acting one-way clutches.
  • the drive element drives the one-way clutches on the input side isochronously but with the opposite direction of rotation and the single-way clutches drive the transport rollers on the output side via the same number of gears.
  • the invention has the advantage that the wire feed speed runs according to a rectified sinus curve and is therefore comparatively slow at the beginning and at the end of a half period of the machine cycle, and the rotational speed of the knife can thereby be relatively slow. This means that the knife can run in cycles, without switching by means of a single-speed clutch.
  • the pitch tool With compression springs with adjacent end windings, the pitch tool carries out the movements at the beginning and end of the wire feed. Since the speed of movement of the pitch tool is proportional to the wire feed speed, the speed of the pitch tool becomes relatively low with such springs, so that the production speed can also be relatively high for this reason.
  • the reference numerals 1 and 2 denote the transport rollers for feeding the wire 3.
  • the winding point 4 is further assigned an inclining tool 5 and a knife 6.
  • the transport rollers 1 and 2 are driven by a clock shaft 7 which is driven by a motor, not shown.
  • a pinion 15 or 14 meshes with each of the teeth 12, 13.
  • Each of these two pinions is rotatably connected to the input side of a one-way clutch 17 or 16, which drives the shafts 19 and 18 on the output side, on each of which a gear wheel is fixed 21 or 20 sits.
  • the two gears 20 and 21 each mesh with a freely rotatable gear 22, to which a gear 23 is rotatably connected, which in turn meshes with a freely rotatable gear 24.
  • This in turn meshes with a pinion 25 which, together with the transport roller 2 and a transmission pinion 27, sits on the shaft 26 in a rotationally fixed manner.
  • the transmission pinion 27 meshes with a pinion 28 which, together with the transport roller 1, is arranged in a rotationally fixed manner on a shaft 28 '.
  • the clock shaft 7 drives a shaft 31 via the gears 29 and 30, on which a cam 32 is seated in a rotationally fixed manner.
  • This actuates, twice per machine cycle, the incline tool 5 via a swivel lever arrangement 33.
  • two sprockets 36 and 37 are driven by the shaft 31 via a sprocket 34 and a chain 35, each of which is rotationally fixed on a shaft 38 and 39 and at the other end wear synchronously rotating crank disks 40 and 41, on the crank pin of which a knife holder 42 is mounted, to which the knife 6 is fastened.
  • the knife edge thus moves on a circular path, which it runs through twice per machine cycle.
  • the movement of the knife 6 is matched to the movement of the transport rollers 1 and 2 in such a way that it always assumes a cutting position when the toothed rack 11 assumes one of its two end positions or when the rotational speed of the transport rollers 1 and 2 is at least approximately zero.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Claims (4)

  1. Machine à enrouler les ressorts, avec des galets de transport (1, 2) amenant le fil métallique (3), ces galets étant susceptibles d'être entraînés par un arbre cadencé (7) dispositif dans lequel les ressorts enroulés sont respectivement séparés du fil (3) par une coupe au vol à la fin du processus d'enroulement par un couteau (6) susceptible d'être déplacé sur une trajectoire circulaire croisant le trajet de déplacement du fil, machine caractérisée en ce que les galets de transport (1, 2) sont entraînés par un entraînement pas à pas pour le déplacement pas à pas du fil et en ce que le couteau sépare, respectivement à la fin d'un pas de déplacement, un ressort en le coupant au vol.
  2. Machine à enrouler les ressorts selon la revendication 1, caractérisée en ce que l'entraînement pas à pas comporte un élément d'entraînement (11) susceptible d'être animé d'un mouvement de va-et-vient en ligne droite et qui, par l'intermédiaire de deux accouplements unidirectionnels agissant dans le même sens (16, 17), entraîne les galets de transport (1, 2).
  3. Machine à enrouler les ressorts selon la revendication 2, caractérisée en ce que l'élément d'entraînement (11) entraîne les accouplements unidirectionnels (16, 17) côté entrée en synchronisme de cadence mais en sens de rotation inverse, et en ce que les accouplements unidirectionnels côté sortie entraînent chacun les galets de transport (1, 2) par l'intermédiaire du même nombre de roues dentées (21, 22 à 25 ou bien 20, 22 à 25).
  4. Machine à enrouler les ressorts selon l'une des revendications 2 et 3, caractérisée en ce que le couteau (6) croise respectivement le trajet de déplacement du fil lorsque l'élément d'entraînement (11) se trouve dans une de ses positions terminales.
EP86109100A 1985-08-08 1986-07-03 Machine à enrouler des ressorts Expired - Lifetime EP0211242B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3390/85A CH669342A5 (fr) 1985-08-08 1985-08-08
CH3390/85 1985-08-08

Publications (3)

Publication Number Publication Date
EP0211242A2 EP0211242A2 (fr) 1987-02-25
EP0211242A3 EP0211242A3 (en) 1989-03-08
EP0211242B1 true EP0211242B1 (fr) 1991-03-27

Family

ID=4254938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86109100A Expired - Lifetime EP0211242B1 (fr) 1985-08-08 1986-07-03 Machine à enrouler des ressorts

Country Status (5)

Country Link
US (1) US4779438A (fr)
EP (1) EP0211242B1 (fr)
JP (1) JP2571216B2 (fr)
CH (1) CH669342A5 (fr)
DE (1) DE3678354D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107309367A (zh) * 2017-07-28 2017-11-03 中国科学院沈阳自动化研究所 一种定长金属丝缠绕装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0214818Y2 (fr) * 1986-06-12 1990-04-23
DE4138896A1 (de) * 1990-12-19 1992-07-02 Wafios Maschinen Wagner Universal-federwindemaschine mit schneideinrichtung
DE4040659C1 (en) * 1990-12-19 1992-02-20 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De Metal spring coiling machine - incorporates wire feed, coiling tools and cutter
JPH0729164B2 (ja) * 1993-01-27 1995-04-05 株式会社板屋製作所 バネ製造装置
US5444905A (en) * 1994-03-14 1995-08-29 Simmons Company Apparatus for manufacturing mattresses and box springs
JP3026793B2 (ja) * 1998-08-21 2000-03-27 株式会社板屋製作所 スプリング製造装置及びツール選択装置
JP2939472B1 (ja) * 1998-08-21 1999-08-25 株式会社板屋製作所 スプリング製造装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24345E (en) * 1957-08-20 bergevin
US1498499A (en) * 1923-08-01 1924-06-17 Walker Body Company Sheet-metal-cutting machine
US2119002A (en) * 1937-03-20 1938-05-31 Torrington Mfg Co Spring coiling machine
US2902079A (en) * 1957-02-20 1959-09-01 Torrington Mfg Co Spring coiling machine with means for separating feed rolls during cutting cycle
DE1267653B (de) * 1962-12-04 1968-05-09 Emil Kunz Federwindemaschine
GB1012802A (en) * 1963-06-14 1965-12-08 Bennett Tools Ltd Apparatus for use in feeding wire or strip material
JPS5142599A (en) * 1974-10-09 1976-04-10 Glory Kogyo Kk Ekitaikyokyukino ekitaitoshutsuhohoto sonosochi
SU895576A1 (ru) * 1980-01-04 1982-01-07 Куйбышевское научно-производственное объединение по механизации и автоматизации производства Автомат дл навивки пружин
US4528831A (en) * 1980-10-27 1985-07-16 Sleeper & Hartley Corp. Wire coiling machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Prospekte der Firma SIMPLEX RAPID *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107309367A (zh) * 2017-07-28 2017-11-03 中国科学院沈阳自动化研究所 一种定长金属丝缠绕装置

Also Published As

Publication number Publication date
DE3678354D1 (de) 1991-05-02
EP0211242A3 (en) 1989-03-08
EP0211242A2 (fr) 1987-02-25
CH669342A5 (fr) 1989-03-15
JP2571216B2 (ja) 1997-01-16
US4779438A (en) 1988-10-25
JPS6234638A (ja) 1987-02-14

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