EP0621095B1 - Procédé pour le redressage intermittent de fils - Google Patents

Procédé pour le redressage intermittent de fils Download PDF

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Publication number
EP0621095B1
EP0621095B1 EP94810038A EP94810038A EP0621095B1 EP 0621095 B1 EP0621095 B1 EP 0621095B1 EP 94810038 A EP94810038 A EP 94810038A EP 94810038 A EP94810038 A EP 94810038A EP 0621095 B1 EP0621095 B1 EP 0621095B1
Authority
EP
European Patent Office
Prior art keywords
wire
rotor
rotation
straightening
speed
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
EP94810038A
Other languages
German (de)
English (en)
Other versions
EP0621095A1 (fr
Inventor
Edgar Hochspach
Robert Widmer
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.)
HA Schlatter AG
Original Assignee
HA Schlatter 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 HA Schlatter AG filed Critical HA Schlatter AG
Publication of EP0621095A1 publication Critical patent/EP0621095A1/fr
Application granted granted Critical
Publication of EP0621095B1 publication Critical patent/EP0621095B1/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
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/02—Straightening
    • B21F1/026—Straightening and cutting

Definitions

  • a method of the type mentioned at the outset is known from EP-0 313 769-B1.
  • the device for carrying out the method which is also evident from this patent, is characterized in that the mass moment of inertia of the straightening rotor is dimensioned so small that the straightening rotor can be decelerated and accelerated at least approximately at the same time as the wire.
  • the conveying means for advancing the wire and the straightening rotor can be synchronously accelerated and decelerated by a common drive device. In this way, the mechanical problems of flying scissors, respectively. moving the straightening rotor in the wire direction can be avoided.
  • the object of the invention is now to provide a method of the type mentioned with a view to reduced wear. to develop a longer lifespan for straightening rotor stones.
  • the solution is that the straightening rotor rotates with a rotational direction that alternates between the working cycles.
  • the straightening rotor is therefore no longer constantly driven in the same direction. Rather, the direction of rotation is changed at least from time to time. For the straightening stones, this results in more uniform wear and tear. a longer service life.
  • the direction of rotation is preferably changed periodically. However, the direction of rotation does not have to be changed for every working cycle. Two, three or more working cycles in succession can also have the same direction of rotation. Due to the periodic change of direction, the degree of wear of the straightening stones should be approximately the same in both directions at all times.
  • the straightening rotor is advantageously brought into an angular position in which the torque exerted by the wire on the straightening rotor is essentially zero. If the straightening rotor is simply braked and then locked, the wire has an internal twist and thus a certain internal tension. This can be eliminated by briefly turning the straightening rotor back after braking.
  • the wire and straightening rotor are preferably accelerated and decelerated essentially synchronously.
  • the straightening rotor and the conveying means for transporting the wire are driven according to the invention with two separate drives (e.g. electric motors).
  • a common control ensures synchronous operation.
  • the feed per rotor revolution (straightening quality) can be chosen almost freely. be programmed.
  • the control circuit which, among other things, specifies the changing direction of rotation, is advantageously programmable for the purpose of setting the ratio of the feed speed of the wire to the angular speed of the straightening rotor.
  • the device according to the invention can thus be easily adjusted to different wire thicknesses.
  • the control circuit In order to cancel the twisting of the wire at the end of a working cycle, which leads to a torque transmitted to the straightening rotor, the control circuit generates z. B. a signal that leads to a number of revolutions of the straightening rotor opposite to the direction of rotation of the corresponding work cycle. This enables the rotor drive to be activated in the pauses between cuts. The drive does not have to generate a standstill torque during this time and therefore does not need any energy from the supply network.
  • a wire 1 shows a block diagram of a device for carrying out the method according to the invention.
  • a wire 1 is pushed through a stationary straightening rotor 2 with the aid of conveying means (still to be described in detail).
  • the wire 1 experiences radial deflections in straightening stones 22.1, 22.2, 22.3.
  • the wire 1 is cut at desired intervals with a cutting device 3.
  • the funding includes drive wheels 4.1, 4.2, 4.3, which are driven by a gear 5 via indicated axes.
  • the gear 5 is z.
  • the straightening rotor 2 in turn is driven by a motor 12 via a toothed belt 13.
  • the two motors 7 and 12 are each via a separate servo amplifier 8. 11 controlled.
  • the servo amplifiers 8, 11 in turn are supplied with direct current by a converter 9.
  • the entire system is fed by a 3-phase network 10.
  • the switching stages 8 and 11 are controlled and monitored by a CNC controller 15.
  • the CNC controller 15 is in data exchange with a known PLC circuit 14. Furthermore, it receives signals from rotary angle transmitters 17, 18 and possibly 19. Certain operating conditions and / or operating modes can be specified via an input device 16.
  • the input device is connected to the CNC via a communication line.
  • the rotary encoder 18 is coupled to a measuring wheel 20 which, for. B. is designed as a counter wheel to the drive wheel 4.3.
  • the wire feed at the input of the straightening rotor 2 can thus be measured.
  • a measuring wheel 21 can also be provided at the output of the straightening rotor 2, which determines the feed and the speed of the straightened wire (rotary angle sensor 19).
  • the rotational speed of the straightening rotor 2 is determined with the rotary angle sensor 17 provided on the axis of the motor 12.
  • Time t is plotted on the abscissa and speed v on the ordinate.
  • v 1 stands for the speed of wire 1 (measuring wheel 20).
  • v 2 stands for the speed of the motor 12 and is proportional to the rotational speed of the straightening rotor 2.
  • wire 1 and straightening rotor 2 are accelerated synchronously (time interval t 1 ).
  • time interval t 2 the two motors 7 and 12 run at an essentially constant speed.
  • the relationship between wire feed speed and rotation speed is, among other things, by determines the wire thickness.
  • the motors 7 and 12 are decelerated to a standstill (time interval t 3 ).
  • the wire is cut by the cutting device 3.
  • the next work cycle begins.
  • the two motors 7 and 12 are accelerated again within the time interval t 5 .
  • the direction of rotation of the motor 12 and thus the straightening rotor 2 was reversed. That is, it rotates in a direction opposite to the direction of rotation of the previous work cycle (t 1 , ..., t 4 ).
  • the direction of rotation of the motor 7, which is responsible for the feed speed, is of course not reversed, ie v 1 remains positive.
  • the motors 7 and 12 again rotate at a substantially constant speed.
  • wire 1 and rotor 2 are decelerated again (time interval t 7 ).
  • the second work cycle is ended.
  • the direction of rotation of the rotor 2 is reversed again, ie the operating sequence according to FIG. 2 starts again from the beginning (t 1 , t 2 ).
  • the direction of rotation does not need to be rotated after each working cycle. You can e.g. B. also inverted every two, three, etc. work cycles. This can be particularly advantageous if it is not desired that the rotor come to a complete standstill. The rotor only needs to be stopped whenever the direction of rotation is changed.
  • the device shown in FIG. 1 can of course also be used to straighten a wire in a conventional manner (cf. EP-0 313 769-B1). This is indicated in Fig. 2b.
  • the course of the speeds v 1 , v 2 are the same in terms of both sign and amount at corresponding times.
  • the different operating modes are e.g. B. stored in the PLC circuit 14 and can be selected by input on the input device 16. Because independent drives are available for the wire feeder and the straightening rotor, which are "connected" only by a common control ("electronic axis"), there are a multitude of possibilities for operating the device.
  • the direction of rotation of the straightening rotor can also be changed by using a suitable gear. In this sense, it is not absolutely necessary to provide two separate motors for the wire feed and the straightening rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Extraction Processes (AREA)

Claims (8)

  1. Procédé pour le redressage intermittent d'un fil (1), selon lequel pendant un cycle de travail (t1, ..., t4),
    a) le fil (1) est accéléré (t1) à une vitesse d'avance prédéterminée,
    b) est dévié radialement par un groupe de blocs redresseurs (22.1, 22.2, 22.3) d'un rotor de redressement (2) qui est monté fixe et tourne avec une vitesse angulaire déterminée, et
    c) est décéléré (t3) par une unité aval (3) de traitement du fil,
    caractérisé en ce que
    d) le rotor de redressement (2) tourne avec un sens de rotation qui s'inverse de façon répétée entre les cycles de travail (t1, ..., t4 et t5, ..., t8).
  2. Procédé selon la revendication 1, caractérisé en ce que le sens de rotation est inversé périodiquement.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le rotor de redressement (2) est amené, à la fin d'un cycle de travail (t41), dans une position angulaire, dans laquelle le couple conditionné par une torsion élastique du fil (1) dans le rotor de redressement (2), est sensiblement nul.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le fil (1) et le rotor de redressement (2) sont accélérés (t1) et décélérés (t3) de façon synchrone.
  5. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, comprenant des moyens d'entraînement pour le transport du fil et un rotor de redressement rotatif pour dévier radialement le fil, caractérisé en ce que les moyens d'entraînement (4.1, 4.2, 4.3) et le rotor de redressement (2) sont entraînés par des moteurs respectifs (7 et 12) et sont commandés par un circuit de commande commun (15).
  6. Dispositif selon la revendication 5, caractérisé en ce que le circuit de commande (15) est agencé de telle sorte que le sens de rotation s'inverse périodiquement.
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que le circuit de commande (15) peut être programmé (14) en vue du réglage du rapport de la vitesse d'avance du fil (1) à la vitesse angulaire du rotor de redressement (2).
  8. Dispositif selon l'une des revendications 5 à 7, caractérisé en ce que le circuit de commande (15) est agencé de telle sorte qu'à la fin d'un cycle de travail, en vue de réduire le couple appliqué par le fil (1), le rotor de redressement (2) est entraîné en rotation pendant un bref intervalle de temps en sens opposé du sens de rotation utilisé pendant le cycle de travail.
EP94810038A 1993-03-25 1994-01-21 Procédé pour le redressage intermittent de fils Expired - Lifetime EP0621095B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH913/93 1993-03-25
CH91393 1993-03-25

Publications (2)

Publication Number Publication Date
EP0621095A1 EP0621095A1 (fr) 1994-10-26
EP0621095B1 true EP0621095B1 (fr) 1997-04-02

Family

ID=4198095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810038A Expired - Lifetime EP0621095B1 (fr) 1993-03-25 1994-01-21 Procédé pour le redressage intermittent de fils

Country Status (7)

Country Link
US (1) US5473923A (fr)
EP (1) EP0621095B1 (fr)
JP (1) JP2694508B2 (fr)
AT (1) ATE150991T1 (fr)
CA (1) CA2119474C (fr)
DE (1) DE59402270D1 (fr)
ES (1) ES2102794T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3031178B2 (ja) 1994-09-28 2000-04-10 株式会社村田製作所 複合高周波部品
DE19503850C1 (de) * 1995-02-06 1996-06-13 Post Friedhelm Sondermasch Nichtrotierender Richtapparat für Biegemaschinen mit integrierter Meßvorrichtung
ATE197005T1 (de) * 1996-02-15 2000-11-15 Pave Automation Design Dev Vorrichtung zum richten von draht
GB9618893D0 (en) * 1996-09-10 1996-10-23 Pave Automation Design Dev Straightening apparatus
US5931484A (en) * 1997-05-19 1999-08-03 L&P Property Management Company Baling wire cart
US6301944B1 (en) * 1999-09-22 2001-10-16 General Electric Company Methods of fabricating mechanized welding wire
EP1588813B1 (fr) * 2004-04-23 2006-08-30 Koenig & Bauer Aktiengesellschaft Appareil de brochage avec dispositif d' alimentation pour au moins un fil à brocher sans fin
DE102010014384A1 (de) * 2010-04-06 2011-10-06 Wafios Ag Richt- und Abschneidemaschine
JP6588058B2 (ja) * 2017-08-04 2019-10-09 矢崎総業株式会社 電線矯正装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879978A (en) * 1974-01-07 1975-04-29 Reynolds Metals Co Wire unreeling system
DE2523831C3 (de) * 1975-05-30 1978-07-27 Louis, Hans, 5650 Solingen Vorrichtung zum Richten von Draht
CH673605A5 (fr) * 1987-10-01 1990-03-30 Schlatter Ag
ATE139917T1 (de) * 1991-11-29 1996-07-15 Pantex Stahl Ag Richtbacken für eine richtvorrichtung zum geraderichten von draht

Also Published As

Publication number Publication date
DE59402270D1 (de) 1997-05-07
CA2119474A1 (fr) 1994-09-26
US5473923A (en) 1995-12-12
ES2102794T3 (es) 1997-08-01
CA2119474C (fr) 2000-05-23
JPH06297065A (ja) 1994-10-25
ATE150991T1 (de) 1997-04-15
EP0621095A1 (fr) 1994-10-26
JP2694508B2 (ja) 1997-12-24

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