EP0804979A1 - Dispositif de coupe pour une machine d'enroulement de ressorts hélicoidaux - Google Patents

Dispositif de coupe pour une machine d'enroulement de ressorts hélicoidaux Download PDF

Info

Publication number
EP0804979A1
EP0804979A1 EP97830184A EP97830184A EP0804979A1 EP 0804979 A1 EP0804979 A1 EP 0804979A1 EP 97830184 A EP97830184 A EP 97830184A EP 97830184 A EP97830184 A EP 97830184A EP 0804979 A1 EP0804979 A1 EP 0804979A1
Authority
EP
European Patent Office
Prior art keywords
cutting device
cam element
slide
swinging axis
cutting
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Withdrawn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
EP97830184A
Other languages
German (de)
English (en)
Inventor
Albino c/o OMD-OFFICINA MECC. DOM. S.P.A. Bassi
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 EP0804979A1 publication Critical patent/EP0804979A1/fr
Withdrawn legal-status Critical Current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 all-purpose cutting device, which has been specifically designed for coil or helical spring winding machines.
  • the linear type of cutting devices usually comprise a slide on which is assembled a movable knife element, operating against a fixed central knife element. During the cutting operation, the wire being processed is caused to stop.
  • the changing feeding speed of the wire material can generate further problems.
  • the circular rotary cutting devices comprise a cutting knife element which is mounted on a supporting member, in turn mounted on two parallel rotary cams, thereby jointly forming a mechanism which can be considered analogous to an articulated parallelogram.
  • the rotary or turning speed of the two cams is equal to the wire material feeding speed.
  • the tension in the pre-tempered wire material will cause, during the winding up operation of said wire material, a breaking thereof without any flash, at the notch location.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing an all-purpose cutting device, specifically designed for coil spring winding machines, which, depending on requirements, is suitable to perform a cutting operation by driving the cutting tool according to a drop-like path or according to a rectilinear path.
  • a main object of the present invention is to provide such a cutting device which is very simple construction-wise and can be made at a competitive cost.
  • Another object of the present invention is to provide such a cutting device which is very reliable and safe in operation.
  • Yet another object of the present invention is to provide such a cutting device which, owing to its capability of performing a cutting operation by the cutting tool being driven on a closed path, or on a rectilinear path, will allow to meet all of the use requirements.
  • an all-purpose cutting device specifically designed for coil spring winding machines, characterized in that said device comprises a framework swingably supporting, about a swinging axis, a guide element, said guide element slidably bearing a cutting tool holding slide, which can be driven along a driving direction which is substantially transversal of said swinging axis, being moreover provided a first cam element affecting said slide for reciprocating said slide along the driving direction as well as second cam element, affecting said guide element, for causing said guide element to swing about the swinging axis thereof, said second cam element being suitable to be actuated simultaneously with said first cam element in order to cause said cutting tool to be driven along a drop path or being adapted to be deactuated in order to cause said cutting tool to be driven exclusively by said first cam element, according to a rectilinear path.
  • the cutting device which has been generally indicated by the reference number 1, comprises a framework or casing 2 swingably supporting, about a swinging axis 3a, a guide element 4 which. in turn, slidably supports a slide element 5 bearing a cutting tool 6.
  • the swinging axis 3a of the guide element 4 is defined by a pin 3 which is coupled to said framework 2 and rotatably supports, about the axis 3a thereof, the guide element 4.
  • a sliding recess 7 is provided, which extends substantially perpendicular to the axis 3a of the pin 3 and inside of which is slidably engaged the slide element 5.
  • the cutting device comprises moreover a first cam element 8 and a second cam element 9, respectively affecting the slide 5 in order to cause the latter to be reciprocated along the driving direction 10, which is substantially perpendicular to the axis 3a, and in order to cause said guide element 4 to swing about said swinging axis 3a.
  • the first cam element 8 is constituted by a crank 11 connected to the end portion of a shaft 12, which has its axis 12a extending parallel to the swinging axis 3a.
  • the shaft 12 is rotatably supported about the axis 12a thereof, for example through bearings 13, by said frame 2.
  • the end portion of the shaft 12 opposite to the crank 11 supporting end portion is coupled to a joint 14 connecting the shaft 12 to the outlet or output shaft 15a of a motor reducing unit 15, which can be driven so as to cause the shaft 12 and accordingly the crank 11 to turn.
  • a gear wheel 16 meshing with a gear wheel 17 keyed on an idle shaft 18, also supported by said framework 2, by means of which the gear wheel 16 is coupled to a gear wheel 19 keyed on a further shaft 20.
  • the second cam element 9 comprises a cam proper 21 and related pad 22, engaging in a seat 23 formed in the guide element 4. As shown, the cam element 21 is coupled to one end portion of the shaft 20 which is also rotatably supported by said framework 2, so as to turn about the rotary axis of said shaft 20.
  • the idle shaft 18 and shaft 20 are arranged with their axes parallel to the swinging axis 3a of the pivot pin 3.
  • first cam element 8 and second cam element 9 are spaced from one another on the same side with respect to the axis 9, i.e. the cam element causing the guide element 4 to swing about the swinging axis 3a is arranged between the first cam element 8 and the swinging axis 3a.
  • the crank 11 is coupled to the slide 5 through a connecting rod 25.
  • the idle shaft 18 can be driven, in a per-se known manner, in order to either actuate or deactuate the coupling of the shaft 12 to the shaft 20, or to actuate or deactuate the coupling of the first cam element 8 to the second cam element 9.
  • the rotary movement of the shaft 12 can be controlled by a sensor, for example an optical type of sensor, or an inductive or capacitive type of sensor 26 laterally facing the shaft 12 or the shaft 15a, or the joint 14, as is clearly shown.
  • a sensor for example an optical type of sensor, or an inductive or capacitive type of sensor 26 laterally facing the shaft 12 or the shaft 15a, or the joint 14, as is clearly shown.
  • the cutting device according to the present invention operates as follows.
  • the shaft 12 and shaft 20 are simultaneously driven, i.e. the idle shaft 18 is so driven as to perform, by the gear wheel 17, the coupling of the gear wheel 16 to the gear wheel 19.
  • the cutting tool 6 must be merely actuated or driven on a rectilinear path, then the coupling of the gear wheels 16 and 19 is disengaged, so as to prevent the driving to the shaft 12 from being transmitted to the shaft 20 and hence to the cam 21.
  • the slide 5 will be merely driven with a reciprocating movement along the driving direction 10.
  • an all-purpose cutting device which is very simple construction-wise, while providing a very high operating reliability and the capability of being used both for performing a rectilinear type of cut and for performing a drop-like type of cut.
  • the used materials, as well as the contingent size can be any, depending on requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
EP97830184A 1996-05-02 1997-04-23 Dispositif de coupe pour une machine d'enroulement de ressorts hélicoidaux Withdrawn EP0804979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI960855 1996-05-02
IT96MI000855A IT1282392B1 (it) 1996-05-02 1996-05-02 Dispositivo di taglio universale,particolarmente studiato per macchine avvolgitrici per la produzione di molle elicoidali

Publications (1)

Publication Number Publication Date
EP0804979A1 true EP0804979A1 (fr) 1997-11-05

Family

ID=11374178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830184A Withdrawn EP0804979A1 (fr) 1996-05-02 1997-04-23 Dispositif de coupe pour une machine d'enroulement de ressorts hélicoidaux

Country Status (2)

Country Link
EP (1) EP0804979A1 (fr)
IT (1) IT1282392B1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948916A1 (de) * 1999-10-11 2001-04-19 Tzyh Ru Shyng Automation Co Antriebsmechanismus zum Bewegen eines Schneidwerkzeugs oder einer Steigungs-Steuerstange in einer Feder-Formmaschine
EP1293274A2 (fr) * 2001-09-17 2003-03-19 HILTI Aktiengesellschaft Dispositif pour la coupe à longueur de matériau en forme de fils
CN102717008A (zh) * 2012-06-29 2012-10-10 苏州光麒科技有限公司 保险丝自动曲折治具
DE102013207028B3 (de) * 2013-04-18 2014-06-26 Wafios Ag Federwindemaschine mit einstellbarer Schnitteinrichtung
WO2015007496A1 (fr) * 2013-07-18 2015-01-22 Wafios Ag Procédé et dispositif de fabrication de ressorts hélicoïdaux par enroulement
WO2019092404A1 (fr) * 2017-11-09 2019-05-16 Hs Products Ltd Appareil et procédé de formation de ressorts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPH06315732A (ja) * 1993-05-10 1994-11-15 Itaya Seisakusho:Kk バネ切断機構
JPH08108238A (ja) * 1994-10-07 1996-04-30 Asahi Seiki Kogyo Kk コイリングマシンのスイングカット式線材切断装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPH06315732A (ja) * 1993-05-10 1994-11-15 Itaya Seisakusho:Kk バネ切断機構
JPH08108238A (ja) * 1994-10-07 1996-04-30 Asahi Seiki Kogyo Kk コイリングマシンのスイングカット式線材切断装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 095, no. 002 31 March 1995 (1995-03-31) *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 008 30 August 1996 (1996-08-30) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948916A1 (de) * 1999-10-11 2001-04-19 Tzyh Ru Shyng Automation Co Antriebsmechanismus zum Bewegen eines Schneidwerkzeugs oder einer Steigungs-Steuerstange in einer Feder-Formmaschine
EP1293274A2 (fr) * 2001-09-17 2003-03-19 HILTI Aktiengesellschaft Dispositif pour la coupe à longueur de matériau en forme de fils
EP1293274A3 (fr) * 2001-09-17 2003-11-12 HILTI Aktiengesellschaft Dispositif pour la coupe à longueur de matériau en forme de fils
CN102717008A (zh) * 2012-06-29 2012-10-10 苏州光麒科技有限公司 保险丝自动曲折治具
DE102013207028B3 (de) * 2013-04-18 2014-06-26 Wafios Ag Federwindemaschine mit einstellbarer Schnitteinrichtung
US20140311204A1 (en) * 2013-04-18 2014-10-23 Wafios Ag Spring winding machine with an adjustable cutting device
EP2826572A1 (fr) 2013-04-18 2015-01-21 Wafios Ag Enrouleuse de ressorts avec dispositif de coupe réglable
WO2015007496A1 (fr) * 2013-07-18 2015-01-22 Wafios Ag Procédé et dispositif de fabrication de ressorts hélicoïdaux par enroulement
CN105377466A (zh) * 2013-07-18 2016-03-02 瓦菲奥斯股份公司 用于通过绕簧制造螺旋弹簧的方法和装置
CN105377466B (zh) * 2013-07-18 2017-03-29 瓦菲奥斯股份公司 用于通过绕簧制造螺旋弹簧的方法和装置
WO2019092404A1 (fr) * 2017-11-09 2019-05-16 Hs Products Ltd Appareil et procédé de formation de ressorts
CN111936250A (zh) * 2017-11-09 2020-11-13 Hs产品有限公司 用于形成弹簧的设备和方法
GB2578720B (en) * 2017-11-09 2022-08-31 Hs Products Ltd Apparatus and method for forming springs

Also Published As

Publication number Publication date
ITMI960855A0 (fr) 1996-05-02
IT1282392B1 (it) 1998-03-20
ITMI960855A1 (it) 1997-11-02

Similar Documents

Publication Publication Date Title
GB2174626A (en) Wire feeding, cutting and stripping apparatus
US5526717A (en) Severing and stripping mechanism for a cable-processing machine
US4046177A (en) Machine for straightening wires
US5570728A (en) Wire feeding and cutting machine
EP0804979A1 (fr) Dispositif de coupe pour une machine d'enroulement de ressorts hélicoidaux
FR2676468A1 (fr) Dispositif d'alimentation de ruban sur une machine a coudre.
US4372141A (en) Wire coiling machine
EP1232093B1 (fr) Dispositif de tensionnement pour machines a lier
US5003856A (en) Paper cutter
US5706687A (en) Spring coiling machine
CN208167272U (zh) 一种自动剪线机构及缝纫机
KR100561910B1 (ko) 압연 스트립을 일정길이로 절단하기 위한 고속 전단기
JP2571216B2 (ja) ばね巻付け機
EP0187428A1 (fr) Mécanisme pour produire un mouvement rotatif alternatif
US7198187B2 (en) Spring manufacturing machine
GB1600829A (en) Flying shear mechanism and a wire cutting-off machine including the mechanism
US3859881A (en) Stock cutting apparatus
EP0037415B1 (fr) Machine d'enroulement de ressorts avec moyens ameliores d'entrainement des cylindres d'alimentation
JPH0710316B2 (ja) ミシンの糸切り装置
JP2869626B2 (ja) 直線切断機及び走間切断方法
EP0056330B1 (fr) Machine à rouler des ressorts comprenant un outil de tranchage
US4520644A (en) Spring coiling machine with improved cut-off means
US4387585A (en) Spring coiling machine with improved coil starter means
GB1008241A (en) Improvements in machines for cutting lengths of strip material
CN219408247U (zh) 一种可准确送片的金片送片装置

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 FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19980507