EP0215006B1 - Dispositif de cintrage de fils coniques - Google Patents

Dispositif de cintrage de fils coniques Download PDF

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Publication number
EP0215006B1
EP0215006B1 EP85905317A EP85905317A EP0215006B1 EP 0215006 B1 EP0215006 B1 EP 0215006B1 EP 85905317 A EP85905317 A EP 85905317A EP 85905317 A EP85905317 A EP 85905317A EP 0215006 B1 EP0215006 B1 EP 0215006B1
Authority
EP
European Patent Office
Prior art keywords
wire
section
diameter
bending
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.)
Expired - Lifetime
Application number
EP85905317A
Other languages
German (de)
English (en)
Other versions
EP0215006A1 (fr
Inventor
Ralf Fangmeier
Reiner Glomb
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.)
TH Kieserling and Albrecht GmbH and Co
Original Assignee
TH Kieserling and Albrecht GmbH and Co
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 TH Kieserling and Albrecht GmbH and Co filed Critical TH Kieserling and Albrecht GmbH and Co
Priority to AT85905317T priority Critical patent/ATE56377T1/de
Publication of EP0215006A1 publication Critical patent/EP0215006A1/fr
Application granted granted Critical
Publication of EP0215006B1 publication Critical patent/EP0215006B1/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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/02—Winding-up or coiling
    • B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
    • B21C47/045—Winding-up or coiling on or in reels or drums, without using a moving guide in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • 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 invention relates to a method for bending conical wires according to. the preamble of claim 1 and a device for performing the method according to the preamble of claim 4.
  • Bending devices of the generic type which can also be used for wires.
  • a straight wire is inserted into the device, bent into a circle and placed on a turntable, reel or the like, where it forms a coil of wire.
  • Such devices fail if the wire does not have a constant cross-section, e.g. is the case for wires for coil springs with progressive or degressive spring characteristic.
  • wire for e.g. Coil springs with a progressive spring characteristic that is only later divided into longitudinal sections that are required to wind the individual springs.
  • a wire varying between 2 or more longitudinal sections with different cross sections leads to flower-shaped wire structures which are only poorly suited for transport and further processing. This wire with alternately smaller and larger diameters is preferably produced by peeling.
  • JP-A-54 148 162 a method for the bending winding of sheet metal strip which is wound up into the coil is known.
  • the sheet metal strip is bent onto the winding curvature in a trio of bending rolls.
  • the bending rolls are computer controlled.
  • the sheet thickness is recorded before bending.
  • the curvature to be imparted to the sheet metal strip changes with the outside diameter of the coil to be wound up, which is calculated from the feed speed and the thickness of the sheet metal. From this, the required curvature of the sheet metal strip is determined and set on the bending roller on the outlet side. The curvature of the sheet metal strip is continuously calculated and changed.
  • the disadvantage here is the high control effort for setting the required curvature of the sheet metal strip.
  • the known solution is unsuitable for double conical spring wires.
  • a bending winding device which winds straight into a roll trio tube into a neatly layered coil.
  • the middle of the 3 rollers, the bending roller is adjusted by a motor.
  • the adjustment is made via a roller that scans the resulting curvature on the outlet side and, if necessary, uses an electrical contact to adjust the bending roller.
  • the tube changes its cross-section within the scope of the manufacturing tolerances and the adjustment of the bending roller serves to compensate for the fluctuations in curvature caused by the cross-sectional tolerances in a trio of bending rollers. Disadvantages here are again the high adjustment effort for the control loop and the hardware effort for the control loop.
  • the invention has for its object to find a simple solution with which wires with a cross-section varying in length between a large and a small diameter can be wound into annular coils.
  • a delay module e.g. a throttle can be provided in the hydraulic system, which extends the switching process over time. This prevents a kink in the wire.
  • This solution can preferably be used for spring wires for automobiles that have one, e.g. have a conical length of no more than 2 m and their coils are less than 3 meters in diameter.
  • the time of switching for the preferably provided single switching point is selected according to claims 2 and 3.
  • the selection of the point in time within the specified ranges depends on whether the wire is conical in the longitudinal section which changes in diameter, or whether the contour of this longitudinal section lies outside or inside the conical contour. If the contour lies essentially outside the conical contour, the switchover time is placed in the vicinity of the cylindrical section with the smaller diameter; if the transition region is concave, the larger value is selected from the specified ranges.
  • the 30% to 40% range is the preferred range.
  • the limit diameters are the diameters which have the ends of an area with a variable diameter. Only those areas are considered in which the change in diameter does not undergo a change of sign.
  • the device for carrying out the method is characterized by at least 2 stops, between which the carriage is moved back and forth with the bending roller.
  • the carriage is only switched back and forth between the two stops.
  • a Switching device ensures the timely switching between the two positions of the slide, characterized by the position of the stops, with the bending roller.
  • the end position of the bending roller with the greater deflection of the wire stands for the smaller wire diameter and the end position of the slide with the bending roller for the smaller deflection for the larger wire diameter.
  • a control that continuously determines the respectively required deflection / bending roller position is not required.
  • the entire travel range of the carriage is regularly larger than the travel range, which is determined by the stops and which is matched to a single wire contour with cylindrical longitudinal sections with different diameters.
  • the adjustment drive for the slide with the bending roller is preferably designed according to claim 6.
  • the feature is gem.
  • Claim 7 provided.
  • the measuring device is connected in terms of control to the switching device and ensures the correct time to be selected for each wire profile for switching from the deflection for the smaller wire cross section to the larger one and vice versa. It preferably detects the diameter of the wire arranged between its sensors.
  • the wire On the underside of a machine frame 1, a group of 3 rollers 3, 4, 5 is provided, through which a wire is guided in the direction of arrow 7.
  • the wire consists of three different longitudinal sections.
  • the longitudinal sections 6 and 9 are cylindrical, the section 8 is conical, it is enclosed by the limit diameters 25, 26. Only a section of the endless wire is shown. Cylindrical and conical sections are repeatedly arranged on the wire in an alternating sequence.
  • the wire is bent round into a bundle in the round bending device and placed on a turntable 24 arranged below the round bending device.
  • rollers 3, 4 are mounted in a stationary manner in the machine frame 1, the bending roller 5 is rotatably mounted on a carriage 2 which can be moved in the machine frame 1 transversely to the direction of travel (arrow 7) of the wire.
  • the movement of the carriage 2 is carried out by means of a hydraulic cylinder 10.
  • the rollers are driven in rotation, not shown.
  • the direction of movement of the carriage 2 is determined with a switching device 15 designed as a 2/2 way valve, which is switched over by a control unit 17.
  • Two stops 11, 12 determine the end positions 22, 23 of the carriage.
  • a pump 16 sets the carriage 2 in motion and drives it against one of the two stops 11, 12.
  • the cylindrical longitudinal section 9 of the wire is given the correct curvature so that it relaxes from its radius of curvature fits on the turntable 24.
  • the wire is given the correct curvature for the cylindrical longitudinal section 6 of the wire which is thicker in diameter.
  • the circular bending device initially has the measuring device 21, which detects changes in the diameter of the wire with the aid of two sensing rollers 19, 20 and gives a pulse to the control unit 17 via a toggle switch 18.
  • the diameter of the wire is detected by the measuring device and the switching device 15 is set according to the specified diameter. If necessary, so if the wire is inserted with a thick cylindrical longitudinal section, the carriage is moved against the stop 12. As soon as the measuring device determines the diameter value provided for the switchover, because at this moment a conical longitudinal section passes the measuring device, the slide 2 with the bending roller 5 is moved against the other stop with a delay, which is caused by a module in the control unit 17 . This is done by means of a switching process effected on the switching device, which redirects the inflow of the hydraulic fluid from line 13 to line 14 or vice versa. Apart from the empirical or arithmetical determination of the switchover point, the switchover does not take into account the contour or length of the longitudinal section 8 connecting the two cylindrical sections 6, 9.

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

Abstract

La cintreuse est utilisée pour des fils de section variant selon leur longueur, qui comprennent deux tronçons cylindriques (6, 9) et un tronçon conique intercalé (8). Le fil est cintré à l'aide de trois galets. Le galet cintreur (5) monté sur un chariot (2), détermine le degré de cintrage conféré au fil avançant. Le filet est cintré en dépit de son diamètre variable de façon telle qu'il se dépose avec une courbure régulière sur le plateau de réception (24). A cet fin, la courbure du tronçon conique (8) est changée entre la vraie courbure du tronçon cylindrique plus mince (9) et celle du tronçon cylindrique plus épais (6). Il suffit d'une commutation simple à un moment approprié pour obtenir une bobine de fil qui peut être déposée sur le plateau de réception (24). Le moment de commutation approprié est situé entre 20 et 60%, de préférence entre 30 et 40% du début de l'augmentation du diamètre du fil.

Claims (10)

1. Procédé pour cintrer et enrouler des fils comportant au moins chaque fois un grand tronçon de longueur, cylindrique, et un petit tronçon de longueur, cylindrique, et comportant au moins un tronçon de longueur, situé entre eux et dont la section varie sur la longueur du fil, procédé qui présente les parties caractérisantes suivantes:
a) le fil est cintré d'une façon connue en elle-même, entre au moins trois rouleaux,
b) le fil est cintré, dans la zone de tronçons cylindriques avec sensiblement la même courbure,
q1) la détermination mesurée du tronçon de longueur qui se présente, comportant une variation de section, se fait du côté de l'entrée sur les rouleaux de cintrage,
caractérisé en ce que
c1) on fait varier le cintrage du fil dans la zone des tronçons de longueur ayant une section en augmentation ou en diminution,
d) le cintrage du fil se fait sur le tronçon de longueur ayant un diamètre qui varie, au moyen d'une inversion d'une courbure appropriée au petit diamètre vers une courbure appropriée au grand diamètre, ou inversement.
2. Procédé suivant la revendication 1, pour cintrer et enrouler des fils, caractérisé en ce que
e) l'opération d'inversion a lieu à un endroit où le diamètre est entre 20% et 60% de la différence de diamètre entre les diamètres limites voisins au dessus du plus petit diamètre.
3. Procédé suivant la revendication 1 et la revendication 2, pour cintrer et enrouler des fils, caractérisé en ce que
f) le opération d'inversion a lieu à un endroit où le diamètre est entre 30% et 40% de la différence de diamètre entre les diamètres limites voisins au dessus du plus petit diamètre.
4. Procédé pour cintrer et enrouler des fils suivant l'une quelconque des revendications 1 à 3, qui présente les parties caractérisantes suivantes: il est prévu:
g) un bâti de machine (1),
h) au moins trois rouleaux (3,4,5) montés sur le bâti de machine (1),
i) un rouleau, le rouleau de cintrage (5), est monté sur un chariot (2) guidé sur le bâti de machine (1),
k) un entraînement mécanique (16) pour chariot (2),
q) un dispositif de mesure (21), côté entrée du rouleau de cintrage (5), caractérisé par
I) un dispositif d'inversion (15),
m) une limitation de course du chariot (2) par deux butées (11, 12), qui déterminent deux positions de butée (22, 23),
s) il n'y a pas de calculateur pour déterminer la courbure nécessaire en fonction de la valeur mesurée du diamètre du fil dans le dispositif de mesure.
5. Procédé suivant la revendication 4, pour cintrer et enrouler des fils, caractérisé en ce que:
n) les deux butées (11, 12) sont réglables,
o) les deux butées sont placées dans la zone de cintrages conformes à la détermination faite.
6. Procédé suivant la revendication 4, pour cintrer et enrouler des fils, caractérisé en ce que:
p) l'entraînement est hydraulique.
7. Procédé suivant la revendication 4, pour cintrer et enrouler des fils, caractérisé en ce que:
q) du côté entrée du rouleau de cintrage (5) est prévu un dispositif de mesure (21).
EP85905317A 1985-02-20 1985-10-18 Dispositif de cintrage de fils coniques Expired - Lifetime EP0215006B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85905317T ATE56377T1 (de) 1985-02-20 1985-10-18 Vorrichtung zum rundbiegen von konischen draehten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3505739 1985-02-20
DE19853505739 DE3505739A1 (de) 1985-02-20 1985-02-20 Vorrichtung zum rundbiegen von konischen draehten

Publications (2)

Publication Number Publication Date
EP0215006A1 EP0215006A1 (fr) 1987-03-25
EP0215006B1 true EP0215006B1 (fr) 1990-09-12

Family

ID=6262954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85905317A Expired - Lifetime EP0215006B1 (fr) 1985-02-20 1985-10-18 Dispositif de cintrage de fils coniques

Country Status (5)

Country Link
US (1) US4918958A (fr)
EP (1) EP0215006B1 (fr)
JP (1) JPS62501894A (fr)
DE (2) DE3505739A1 (fr)
WO (1) WO1986004837A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129172A1 (de) * 1991-09-03 1993-03-11 Saar Federn Gmbh Verfahren zum haspeln von bunden mit konzentrischen windungen aus walzhartem, verguetetem oder auf andere weise waermebehandeltem draht mit sich periodisch veraendernden drahtdurchmessern

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IT1227122B (it) * 1988-09-30 1991-03-15 Blm Spa Macchina per curvare automaticamente tubi e materiali simili
US5865051A (en) * 1994-12-07 1999-02-02 Wafios Maschinenfabrik Gmbh & Co. Kommanditgesellschaft Procedure and apparatus for the optimized manufacture of coil springs on automatic spring winding machines
IT1278065B1 (it) * 1995-05-12 1997-11-17 Cml Costr Mecc Liri Srl Centinatrice universale.
DE19604408C1 (de) * 1996-02-07 1997-05-28 Allevard Federn Gmbh Verfahren zur Herstellung von Schraubenfedern aus bikonischem Draht
IT1296311B1 (it) * 1997-05-23 1999-06-25 Cml Costr Mecc Liri Srl Centrinatrice modulare multifunzionale e sistema di posizionamento lineare per essa
US7076979B2 (en) * 1998-04-07 2006-07-18 Robert Bosch Gmbh Method and device for producing curved lengths of spring band steel
MC2489A1 (fr) * 1998-12-18 1999-11-22 Snc Astori Et Ferretti Oti Eti Procédé et dispositif de fabrication d'une tresse composée de fils métaliques
GB2363091B (en) * 2000-06-07 2003-10-08 Donal Thomas Curry A method, a tool and apparatus for coiling and elongated wire member
GB0115547D0 (en) * 2001-06-26 2001-08-15 Beaudoin Michel Skate blade curving device
KR100611361B1 (ko) * 2001-07-18 2006-08-11 씨엠엘 인터내셔널 에스. 피. 에이. 파이프 벤딩 머신의 가동형 롤러 홀더 슬라이더의 선형구동용 유압회로
US6691414B2 (en) * 2001-10-11 2004-02-17 Richard D. Harding Method and system for coating and fabricating spiral rebar
KR100668095B1 (ko) * 2003-02-28 2007-01-15 씨엠엘 인터내셔널 에스. 피. 에이. 공작기계 슬라이더를 양방향으로 선형 구동하는 유압회로
JP2008522370A (ja) * 2004-11-30 2008-06-26 ザ、リージェンツ、オブ、ザ、ユニバーシティ、オブ、カリフォルニア 電気化学装置用封止ジョイント構造
CN102476136A (zh) * 2010-11-29 2012-05-30 中国北车集团大同电力机车有限责任公司 气动弯管装置
CN102179435B (zh) * 2011-03-30 2012-11-07 陕西科技大学 一种变曲率管子弯曲装置及方法
ITTO20130942A1 (it) * 2013-11-20 2015-05-21 Cte Sistemi Srl Impianto e procedimento per la curvatura e l'avvolgimento di conduttori per la realizzazione di bobine superconduttive
CN104289574A (zh) * 2014-10-15 2015-01-21 长治市钜星锻压机械设备制造有限公司 盘管机多模具安装机构
CN111842720A (zh) * 2020-08-17 2020-10-30 山西博瑞泰精线科技有限公司 一种用于成品金属丝的涡流探伤检测系统

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DE1752397A1 (de) * 1968-05-20 1971-02-04 Schraubenkombinat Veb Biegevorrichtung
US3640112A (en) * 1969-05-12 1972-02-08 Republic Steel Corp Coiling method and apparatus
DE2222607A1 (de) * 1972-05-09 1973-11-22 Rheinstahl Ag Ringwalzwerk
US4164133A (en) * 1975-11-21 1979-08-14 Holland Mechanics B.V. Apparatus for forming circularly bent articles from a straight metal profiled strip
JPS54148162A (en) * 1978-05-12 1979-11-20 Hitachi Ltd Belt plate winder
US4412438A (en) * 1981-07-24 1983-11-01 Gosudarstvenny Nauchnoissledovatelsky, Proektny I Konstruktorsky Institut Splavov I Obrabotki Tsvetnykh Metallov "Giprotsvetmetobrabotka" Pipe bending machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129172A1 (de) * 1991-09-03 1993-03-11 Saar Federn Gmbh Verfahren zum haspeln von bunden mit konzentrischen windungen aus walzhartem, verguetetem oder auf andere weise waermebehandeltem draht mit sich periodisch veraendernden drahtdurchmessern

Also Published As

Publication number Publication date
EP0215006A1 (fr) 1987-03-25
DE3505739A1 (de) 1986-08-21
DE3579695D1 (de) 1990-10-18
JPS62501894A (ja) 1987-07-30
US4918958A (en) 1990-04-24
WO1986004837A1 (fr) 1986-08-28

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