EP0526428A1 - Vorrichtung zum Formen von Federn ohne Drahtende, entweder nach links oder rechts gewickelt - Google Patents

Vorrichtung zum Formen von Federn ohne Drahtende, entweder nach links oder rechts gewickelt Download PDF

Info

Publication number
EP0526428A1
EP0526428A1 EP92830408A EP92830408A EP0526428A1 EP 0526428 A1 EP0526428 A1 EP 0526428A1 EP 92830408 A EP92830408 A EP 92830408A EP 92830408 A EP92830408 A EP 92830408A EP 0526428 A1 EP0526428 A1 EP 0526428A1
Authority
EP
European Patent Office
Prior art keywords
spring
wire
wound
leftwardly
rightwardly
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.)
Withdrawn
Application number
EP92830408A
Other languages
English (en)
French (fr)
Inventor
Hans c/o OMD Officina Mec.Domaso S.p.A. Kunz
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.)
OMD OFFICINA MECCANICA DOMASO SpA
Original Assignee
OMD OFFICINA MECCANICA DOMASO SpA
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 OMD OFFICINA MECCANICA DOMASO SpA filed Critical OMD OFFICINA MECCANICA DOMASO SpA
Publication of EP0526428A1 publication Critical patent/EP0526428A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B21F11/005—Cutting wire springs

Definitions

  • the present invention relates to an apparatus for making springs without shank, wound either rightwardly or leftwardly.
  • This jaw assembly is provided for holding the start of the spring wire in a fixed condition above a winding bar, and the winding bar is rotatively driven by the mandrel, whereas the spring wire guide unit is driven with a preset speed in parallel to the winding bar axis, from the mandrel toward the end of the winding bar.
  • the mandrel rotary movement is caused to stop, the mandrel jaw assembly is opened and, by means of the spring wire guide unit, the spring, which is still connected to the wire pulled from the wire coil, is removed from the winding bar and brought under a cutting unit.
  • the cutting operation is performed vertically, from the top to the bottom, on the last turn of the spring, whereas the wire for forming the spring is supplied in a substantially horizontal direction.
  • the wire guide unit is automatically returned to its starting position, so as to bring the semi-circumference shaped start portion under the mandrel jaw assembly.
  • the aim of the present invention is to provide an apparatus for making springs without starting shank, wound either rightwardly or leftwardly, which permits the wire to be suitably provided with a start shaped or contoured portion, independently from the winding direction of the spring, and without the provision of a second cutting unit or a second spring wire guide element.
  • a main object of the present invention is to provide such an apparatus which has a very reduced size, and being furthermore adapted to always operate with a front wire supply and with a single wire guide unit which can be vertically adjusted in order to drive the wire both under and above the winding bar.
  • Yet another object of the present invention is to provide such a spring making apparatus which is very reliable and safe in operation.
  • Yet another object of the present invention is to provide an apparatus for making springs without starting shank, wound either rightwardly or leftwardly, which can be easily made starting from easily commercially available elements and materials and which, moreover, is very competitive from a mere economic standpoint.
  • an apparatus for making springs without starting shank, wound either rightwardly or leftwardly said apparatus being adapted to supply the wire to be wound on a mandrel, thereon operates a jaw assembly for holding a starting portion of said spring, characterized in that said apparatus further comprises a cutting unit for cutting an end portion of the wire of the made spring, said cutting unit being arranged on a side of said wire guide element opposite with respect to the spring and being adapted to cut the spring wire so as to leave, at a free end portion thereof, constituting the starting portion of a next spring, a portion having the shape of a circumference quadrant.
  • the apparatus for making springs without start shank, wound either rightwardly or leftwardly comprises a wire guide element, indicated generally at the reference number 1, which supplies a spring wire 2 withdrawn from a wire coil not shown in the drawings.
  • the spring wire 2 is wound on a mandrel 3, thereon operates a jaw assembly 4 adapted to hold the start end portion of the wire.
  • the wire is wound so as to provide the set turn number and the set pitch, which will be determined by the displacement of the wire guide element, in an axial direction, with respect to the mandrel.
  • the wire guide element is advantageously arranged in a horizontal plane.
  • the wire guide element After the end of the spring 10 winding operation, the wire guide element will drive the made spring 10 to a cutting unit, which is arranged, according to a main feature of the present invention, on a horizontal plane and, more specifically, being arranged on the opposite side of the wire guide element, with respect to the spring 10.
  • the wire 2 being cut will be held connected to its start portion, indicated at 2A, which has the shape of a circumference quadrant, and is adapted to form the start winding portion of a next spring which can be made without shank.
  • the provision of the spring cutting unit 15 in a horizontal plane allows to make springs, wound either leftwardly or rightwardly, while providing the desired start portion corresponding to a circumference quadrant on the wire 2, which thing could not be obtained by the prior art spring winding apparatus.
  • the wire guide element can be vertically adjusted, so as to guide the wire both under and above the winding bar, and depending on the leftwardly or rightwardly direction of the spring being wound.
  • the above disclosed construction allows to make a comparatively low cost spring winding apparatus, and an apparatus which has a much smaller size than prior apparatus.
  • a spring making apparatus which comprises a horizontal cutting unit allowing to leave a circumference quadrant start wire portion on the spring forming wire, which portion will allow to obtain a perfectly cylindrical spring.
  • the provision of a horizontal cutting unit allows the apparatus to always operate with a front wire supply and with a single wire guide element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
EP92830408A 1991-08-01 1992-07-23 Vorrichtung zum Formen von Federn ohne Drahtende, entweder nach links oder rechts gewickelt Withdrawn EP0526428A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI912153 1991-08-01
ITMI912153A IT1251040B (it) 1991-08-01 1991-08-01 Apparecchiatura per la realizzazione di molle senza gambo di inizio con avvolgimento destro o sinistro

Publications (1)

Publication Number Publication Date
EP0526428A1 true EP0526428A1 (de) 1993-02-03

Family

ID=11360490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92830408A Withdrawn EP0526428A1 (de) 1991-08-01 1992-07-23 Vorrichtung zum Formen von Federn ohne Drahtende, entweder nach links oder rechts gewickelt

Country Status (2)

Country Link
EP (1) EP0526428A1 (de)
IT (1) IT1251040B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016175111A (ja) * 2015-03-20 2016-10-06 旭精機工業株式会社 ばね成形機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834562C (de) * 1949-12-18 1952-03-20 Albert Eisele Dipl Ing Abschneidvorrichtung
EP0012104A1 (de) * 1978-11-23 1980-06-11 O.E.M.B. S.A. Vorrichtung um ein Walzprodukt mit sehr kleinen Halbmessern zu biegen und dieses, ohne Verschiebung der Rollen, zu schneiden
JPS6250028A (ja) * 1985-08-27 1987-03-04 High Frequency Heattreat Co Ltd 高強度太径線材使用冷間成形コイルばね成形時の切断方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE834562C (de) * 1949-12-18 1952-03-20 Albert Eisele Dipl Ing Abschneidvorrichtung
EP0012104A1 (de) * 1978-11-23 1980-06-11 O.E.M.B. S.A. Vorrichtung um ein Walzprodukt mit sehr kleinen Halbmessern zu biegen und dieses, ohne Verschiebung der Rollen, zu schneiden
JPS6250028A (ja) * 1985-08-27 1987-03-04 High Frequency Heattreat Co Ltd 高強度太径線材使用冷間成形コイルばね成形時の切断方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 238 (M-613)(2685) 5 August 1987 & JP-A-62 50 028 ( HIGH FREQUENCY HEATTREAT CO LTD ) 4 March 1987 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016175111A (ja) * 2015-03-20 2016-10-06 旭精機工業株式会社 ばね成形機

Also Published As

Publication number Publication date
ITMI912153A1 (it) 1993-02-01
ITMI912153A0 (it) 1991-08-01
IT1251040B (it) 1995-05-02

Similar Documents

Publication Publication Date Title
US4074418A (en) Stator coil winding and lead wire connection
US4052783A (en) Apparatus and method for winding armatures
US3812577A (en) Armature winding method and apparatus
US3628229A (en) Automatic armature winding machine
JPS5836577B2 (ja) 電気的な機械のステ−タのコイルを巻線する装置
US3713208A (en) Armature winding method
US4997138A (en) Methods and apparatus for producing stators with coil terminations at both ends
US5361487A (en) Methods for connecting intermediate stator coil leads
EP0490173A2 (de) Maschine zum Wickeln von Statoren
US3785034A (en) Wire lead cutter for armature winding machine
WO2002033809A1 (en) Machine for winding dynamo-electric stators
US2389336A (en) Machine for winding the stators of electric motors
US3714973A (en) Coil transfer and storage tool and machine for winding same
EP0526428A1 (de) Vorrichtung zum Formen von Federn ohne Drahtende, entweder nach links oder rechts gewickelt
US4558580A (en) Coil shaping apparatus
US4541170A (en) Method and device for forming the rotor winding coils of a dynamoelectric machine
EP0119172B1 (de) Vorrichtung zum Formen von Rotorwicklungsspulen einer dynamo-elektrischen Maschine und zum Ankern der Spulenenden an einem am Rotor verbundenen Kommentator
EP0387411B1 (de) Verfahren und Vorrichtung zur Herstellung von Ständern mit Wicklungsanschlüssen an beiden Enden
US3942246A (en) Method of making armature windings for commutator type dynamo-electric machines
CN114180127B (zh) 一种管类全自动裁切打卷绑扎机
US4305435A (en) Winding and cutting device
CN115472421A (zh) 一种方形导线电感绕线系统
US4279277A (en) Apparatus for manufacturing a dynamolelectric field member
US5709251A (en) Method and device for winding coils for electric motors or generators
JP3548618B2 (ja) コイル巻線装置におけるリード線の保持切断装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR

18D Application deemed to be withdrawn

Effective date: 19930804