EP0340322B1 - Dérouleur de fil métallique - Google Patents

Dérouleur de fil métallique Download PDF

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Publication number
EP0340322B1
EP0340322B1 EP88107043A EP88107043A EP0340322B1 EP 0340322 B1 EP0340322 B1 EP 0340322B1 EP 88107043 A EP88107043 A EP 88107043A EP 88107043 A EP88107043 A EP 88107043A EP 0340322 B1 EP0340322 B1 EP 0340322B1
Authority
EP
European Patent Office
Prior art keywords
wire
unwinding device
deflection roller
roller
shaft
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
EP88107043A
Other languages
German (de)
English (en)
Other versions
EP0340322A1 (fr
Inventor
Heinrich Groos
Hans Hermanni
Jürgen Gerlach
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.)
Berkenhoff and Co KG
Original Assignee
Berkenhoff and Co KG
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 Berkenhoff and Co KG filed Critical Berkenhoff and Co KG
Priority to AT88107043T priority Critical patent/ATE83467T1/de
Priority to DE8888107043T priority patent/DE3876789D1/de
Priority to EP88107043A priority patent/EP0340322B1/fr
Priority to ES198888107043T priority patent/ES2036233T3/es
Priority to JP1109240A priority patent/JPH0266069A/ja
Publication of EP0340322A1 publication Critical patent/EP0340322A1/fr
Priority to US07/714,884 priority patent/US5248104A/en
Application granted granted Critical
Publication of EP0340322B1 publication Critical patent/EP0340322B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36—Floating elements compensating for irregularities in supply or take-up of material

Definitions

  • the invention relates to a wire unwinding device for wire EDM machines with a shaft for receiving a wire spool with a fixed, rotatably mounted on the housing deflection roller, a position-changing deflection roller which is rotatably arranged in a region between the wire spool and the fixed deflection roller. so that the wire to be unwound from the wire spool is passed in the direction of curvature predetermined by the wire spool over the stationary deflection roller and subsequently over the position-changing deflection roller.
  • Wire unwinding devices are known from the prior art, in which a wire spool on which wire is wound. is rotatably mounted so that the wire can be removed.
  • a wire unwinding device it is necessary that the unwinding of the wire is carried out in a controlled manner, a predetermined wire tension in particular having to be ensured in order to avoid loop formation or wire tears.
  • the known wire unwinding devices also have the disadvantage that it is not possible to unwind large wire spools in a reliable manner.
  • known wire unwinding devices does not guarantee that a change in the mechanical properties of the wire is avoided.
  • a wire winding machine which is used to wind wires on coils.
  • This known device has a stationary deflection roller which is rotatably mounted on the housing.
  • a position-changing deflection roller is arranged in an area between the wire spool and the stationary deflection roller, the wire being guided over the rollers in such a way that its predetermined direction of curvature is maintained.
  • such a device is not suitable for use in EDM machines for electrical as well as drive reasons.
  • the invention has for its object to provide a wire unwinding device for wire EDM machines, which can be equipped with very large wire coils with a simple structure and reliable operation and in which an influence on the mechanical properties or the strength properties of the wire is avoided and that for the feed of the wire to the EDM machines is suitable in all operating conditions.
  • the object is achieved in that the axes of the stationary and movable deflection rollers and that of the unwinding device are parallel to one another, that the deflection rollers and all components that come into contact with the wire are designed or arranged in an electrically insulating manner and that the motor driving the shaft of the unwinding device is reversibly operable.
  • the wire unwinding device is characterized by a number of considerable advantages.
  • the arrangement of the deflecting rollers and the way of guiding the wire according to the invention ensures that the wire is always kept under sufficient tension so that, on the one hand, the wire is unwound too quickly from the wire spool and thus a loop formation is avoided, and on the other hand a wire break due to excessive loads is excluded. Since the wire from the wire spool is first passed over the stationary deflection roller and then over the position-changing deflection roller, it is possible to always ensure sufficient tension of the wire by displacing the position-changing deflection roller, that is to say by lateral displacement or pivoting, this being independent on the size of the wire spool used or the amount of wire located on it.
  • the arrangement of the wire spool and the deflecting rollers also makes it possible to unwind the wire from the wire spool and to forward it to a downstream processing or processing station in such a way that the wire is guided around the deflecting rollers exclusively in the direction of curvature specified by the wire spool. It is thus avoided that the wire is subjected to alternate bends during the unwinding process.
  • This proves to be particularly advantageous when the wire unwinding device according to the invention is used in connection with an eroding machine, for example for EDM cutting, since the stiffness or strength of the wire, which is decisive for the eroding behavior, is not influenced.
  • the wire thus remains essentially in the direction of curvature predetermined by the winding on the wire spool, it is bent as straight as possible when diverting around the deflecting rollers, but is not subjected to alternating bends.
  • the deflection rollers can be selected to be very large in diameter, for example with a diameter which corresponds to the mean diameter of the wire spool.
  • the wire unwinding device according to the invention thus enables the wire to be unwound extremely gently.
  • wire unwinding device Another essential advantage of the wire unwinding device according to the invention is that very large wire spools can be processed, which enable the unwinding device to be operated essentially unattended over a long period of time. This proves to be particularly advantageous if a downstream machine, for example an eroding machine, is to be operated unattended during the night shift or over the weekend.
  • the inventive routing and storage of the wire ensures that the wire unwinding device can not malfunction.
  • the position-changing deflection roller is preloaded in a translation direction in order to apply a pretensioning force to the wire.
  • the stationary deflection roller is designed as a double roller and the position-alterable deflection roller is arranged below the stationary deflection roller so that the wire from the wire spool over one part of the double roller, over the position-changeable deflection roller and over the other part the dual role.
  • the wire is thus moved in a loop path without interchangeable bends being applied to the wire.
  • a wire guide which preferably comprises two rotatably mounted rollers, is advantageously provided between the wire spool and the deflection roller.
  • the wire can be guided after the stationary deflection roller via a height-adjustable guide roller which can be adapted to a downstream wire processing device.
  • a height-adjustable guide roller which can be adapted to a downstream wire processing device.
  • Another, particularly favorable embodiment of the wire unwinding device has a cantilevered one Shaft on which the wire spool is mounted by means of cones which can be inserted laterally into a central recess in the wire reel and are mounted on the shaft.
  • the wire reel is pushed onto the shaft in that the wire spool, the central recess of which is larger than the diameter of the shaft, is placed on the shaft and moved into the unwinding position.
  • the cones it is possible to center the wire coil relative to the shaft.
  • the wire spool is raised so that it no longer lies on the floor, for example. This measure makes it possible to dispense with a height-adjustable unwinding shaft as well as a height-adjustable transport device for the wire spool.
  • a transport carriage which can be displaced in the longitudinal direction of the shaft, for accommodating the wire coil is arranged below the shaft and preferably has two rotatable support supports which are parallel to one another.
  • roll includes.
  • the wire spool, the deflection rollers and all components that come into contact with the wire are designed or arranged in an electrically insulating manner, so that electrical currents, which are applied to the wire during EDM cutting, for example, cannot be conducted into the wire unwinding device.
  • the shaft and thus the wire reel mounted on it by means of a motor steplessly driven, the drive only takes place in one direction when unwinding.
  • Reversing spooling proves to be advantageous, for example, when a larger amount of wire is to be rewound onto the wire spool when the device downstream of the wire unwinding device is changed. Since the wire is also passed over the position-changing deflection roller during rewinding, it is ensured that the rewound wire is wound on the wire reel with sufficient tension.
  • the rewinding process can also be used to advantage if a device downstream of the wire unwinding device has only a low winding capacity for wire or if the wire is to be used several times.
  • the wire unwinding device comprises a housing 4, indicated only schematically, in which a motor 14 is mounted, which drives a shaft (not shown in FIG. 1) via a gear 15, on which a wire spool 2 can be stored.
  • the storage of the wire coil 2 will be described below with reference to FIGS. 2 and 3 in detail.
  • FIG. 1 shows a transport carriage 12 arranged below the wire spool 2, which has two mutually parallel, rotatable support rollers 13.
  • the support rollers 13 are slidably mounted in the housing 4 along their axis.
  • the carriage 12 is connected to a ramp 16 which can be moved together with the carriage 12.
  • the carriage 12 together with the ramp 16 is laterally displaced until the wire spool 2 is pulled off the floating shaft (not shown). It is then possible in a simple manner to roll the wire spool away from the support rollers 13 via the ramp 16 and to replace it with another wire spool in an analogous manner.
  • the wire spool 2 comprises in the usual way a plurality of layers of wire 6, which is passed through between two rotatable rollers 8a, 8b of a wire guide 9 when the wire spool 2 is being unwound.
  • the wire guide 9 ensures that the wire, despite the back and forth movement forced by the arrangement on the wire spool 2, is always fed in a safe manner to a subsequently arranged stationary deflection roller 3.
  • a position-adjustable deflection roller 5 is arranged below the stationary deflection roller 3 .
  • the wire is passed over a second fixed deflection roller 3 ', which, as shown schematically in Fig. 1, is adjustable in height and / or pivotable in a certain range.
  • the wire unwound from the wire spool 2 is first passed over a position-changing deflection roller which, as will be described below, can be laterally displaced, for example by means of a carriage, in order to always apply sufficient tension to the wire before that of a non-position-changeable, fixed deflection roller (in which in Fig. 1 shown embodiment of the guide roller 3 ') is supplied.
  • a position-changing deflection roller 5 the stationary deflection roller 3 can be dispensed with.
  • the arrangement of the deflection rollers must be selected so that the direction of curvature of the wire, which is predetermined by the wire coil 2, is not changed, so that alternate bends in the wire are avoided.
  • FIG. 2 shows a schematic side view of a further exemplary embodiment of the wire unwinding device according to the invention. It can be clearly seen that the wire spool 2 is mounted on a floating shaft 1.
  • the shaft 1 as shown schematically, is operatively connected via the gear 15 by means of the motor 14 and can be driven by it.
  • the motor 14 is controlled via a control device, not shown in detail, which is arranged in a control cabinet 19.
  • the wire coil 2 has a central recess which is larger in diameter than the outer diameter of the shaft 1.
  • a cone 11a is fastened to the shaft.
  • Another cone 11b can be pushed onto the shaft 1 after the wire coil 2 has been arranged on the shaft 1.
  • the cone 11b is pressed against the wire spool 2 via a nut 20, which can be screwed onto a thread of the shaft 1, and inserted into the central recess of the wire spool 2.
  • a nut 20 which can be screwed onto a thread of the shaft 1, and inserted into the central recess of the wire spool 2.
  • the wire removed from the wire spool 2 is first passed over a stationary deflection roller 3, then over the position-adjustable deflection roller 5 and then over the further stationary deflection roller 3 '.
  • the position-changing deflection roller 5 is mounted on a carriage 7 which is guided on one or more vertical rails 21 and can be moved in the vertical direction.
  • a prestressing force is applied to the wire 6 by the position-changing deflection roller 5.
  • the magnitude of the prestressing force can be applied to the carriage 7 by an elastic element, by the influence of gravity or, as shown in FIG. 2, by a drive device 22.
  • the drive device 22 is operationally connected to a motor 23 and is designed, for example, in the form of a revolving chain which is guided via chain wheels 24.
  • FIG. 3 shows a schematic, rear view of the exemplary embodiment shown in FIG. 2. From Fig. 3 it can be seen in particular that the wire 6 is guided by the wire spool 2 over the deflection rollers 3, 5, 3 'so that no change in the previously existing direction of curvature occurs.
  • the deflection roller 3 ' which, unlike the position-adjustable deflection roller 5, which the latter is constantly in motion during operation in order to apply a pretension to the wire, is stationary once the adjustment has been carried out, guides the wire to an adjustable guide roller 10, which in particular adjustable in height is mounted on the housing 4.
  • the guide roller 10 makes it possible to set the wire in its direction of flow to a downstream processing system in such a way that the bending direction of the wire already described can be maintained.
  • two fixed deflection rollers 3, 3 ' were used, which are arranged separately from one another.
  • the wire unwinding device according to the invention can be used to supply a wide variety of machines with wire, it can be advantageous to mount the housing 4 on lockable rollers. Furthermore, it can prove to be advantageous to close the area of the housing in which the wire spool 2 and the deflection rollers are arranged by means of a door to the environment in order to avoid contamination and / or impairment of the unwinding process.

Landscapes

  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Unwinding Of Filamentary Materials (AREA)

Claims (15)

  1. Dérouleur de fil pour machines d'érosion à fil, comportant un arbre (1) pour recevoir une bobine de fil (2), comportant une poulie de renvoi fixe en position (3), montée tournante sur le bâti (4), une poulie de renvoi mobile en position (5), qui est montée tournante dans une zone comprise entre la bobine de fil (2) et la poulie de renvoi fixe en position (3), de telle façon que le fil (6) se déroulant de la bobine de fil (2) passe par la poulie de renvoi fixe (3) puis ensuite par la poulie de renvoi mobile (5), en conservant la direction de la courbure déterminée par la bobine de fil, caractérisé en ce que les axes de la poulie de renvoi fixe (3) et de la poulie de renvoi mobile (5), ainsi que ceux du dispositif de dévidage, sont essentiellement disposés parallèlement les uns par rapport aux autres, en ce que les poulies de renvoi (3, 5), ainsi que tous les éléments constitutifs venant en contact avec le fil (6) sont réalisés, ou sont disposés, de façon à être isolés électriquement, et en ce que le moteur (14) entraînant l'arbre (1) du dispositif peut être entraîné de façon réversible.
  2. Dérouleur de fil suivant la revendication 1, caractérisé en ce que le moteur (14) peut être entraîné de façon réversible, avec variation progressive.
  3. Dérouleur de fil suivant la revendication 1 ou la revendication 2, caractérisé en ce que la poulie de renvoi mobile (5) est prévue pour exercer une force soumettant le fil à une précontrainte dans le sens de la translation.
  4. Dérouleur de fil suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que la poulie de renvoi fixe (3) est réalisée sous la forme d'une double poulie, en ce que la poulie de renvoi mobile (5) est disposée en dessous de la poulie de renvoi (3), et en ce que le fil (6) est guidé, depuis la bobine de fil (2), en passant par l'une des parties de la double poulie, par la poulie de renvoi mobile (5), puis par l'autre partie de la double poulie.
  5. Dérouleur de fil suivant la revendication 4, caractérisé en ce que la poulie de renvoi (5) mobile en position est montée sur un chariot (7) pouvant se déplacer verticalement.
  6. Dérouleur de fil suivant la revendication 3, caractérisé en ce que le chariot (7) est, au moyen d'un organe élastique, soumis à une précontrainte, tendant à l'éloigner de la poulie de renvoi fixe (3).
  7. Dérouleur de fil suivant la revendication 5, caractérisé en ce que le chariot (7) est soumis, du fait de la pesanteur, à une précontrainte tendant à l'éloigner de la poulie de renvoi fixe (3).
  8. Dérouleur de fil suivant l'une quelconque des revendications 1 à 5, caractérisé en ce qu'entre la bobine de fil (2) et la poulie de renvoi (3), est disposé un guidage de fil (9) équipé de deux rouleaux (8a, 8b) montés tournants.
  9. Dérouleur de fil suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que le fil (6) peut, après la poulie de renvoi fixe (3), être guidé sur une poulie de guidage (10) dont la hauteur est modifiable et qui peut être adaptée sur une unité de traitement à fil, située en aval.
  10. Dérouleur de fil suivant l'une quelconque des revendications 1 à 9, caractérisé en ce que l'arbre (1) pour recevoir la bobine de fil (2) est monté flottant.
  11. Dérouleur de fil suivant l'une quelconque des revendications 1 à 10, caractérisé en ce que la bobine de fil (2) est montée sur l'arbre (1) au moyen de cônes (11) qui sont placés sur cet arbre (1) et que l'on peut introduire latéralement dans un évidement centré de la bobine de fil (2).
  12. Dérouleur de fil suivant l'une quelconque des revendications 1 à 11, caractérisé en ce que le dérouleur de fil peut être déplacé sur des rouleaux.
  13. Dérouleur de fil suivant l'une quelconque des revendications 1 à 12, caractérisé en ce qu'au-dessous de l'arbre (1), est disposé un chariot de transport (12) pouvant se déplacer suivant le sens longitudinal de l'arbre (1), pour recevoir la bobine de fil (2).
  14. Dérouleur de fil suivant la revendication 13, caractérisé en ce que le chariot de transport (12) comporte deux rouleaux-supports (13) tournants, parallèles entre eux.
  15. Dérouleur de fil suivant l'une quelconque des revendications 1 à 14, caractérisé en ce que la tension du fil (6) est réglable et peut être maintenue à une valeur constante au moyen des poulies de renvoi réglables en position.
EP88107043A 1988-05-03 1988-05-03 Dérouleur de fil métallique Expired - Lifetime EP0340322B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT88107043T ATE83467T1 (de) 1988-05-03 1988-05-03 Drahtabspulvorrichtung.
DE8888107043T DE3876789D1 (de) 1988-05-03 1988-05-03 Drahtabspulvorrichtung.
EP88107043A EP0340322B1 (fr) 1988-05-03 1988-05-03 Dérouleur de fil métallique
ES198888107043T ES2036233T3 (es) 1988-05-03 1988-05-03 Dispositivo de devanado de alambre.
JP1109240A JPH0266069A (ja) 1988-05-03 1989-05-01 ワイヤ繰出し装置
US07/714,884 US5248104A (en) 1988-05-03 1991-06-14 Wire-unwinding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88107043A EP0340322B1 (fr) 1988-05-03 1988-05-03 Dérouleur de fil métallique

Publications (2)

Publication Number Publication Date
EP0340322A1 EP0340322A1 (fr) 1989-11-08
EP0340322B1 true EP0340322B1 (fr) 1992-12-16

Family

ID=8198942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107043A Expired - Lifetime EP0340322B1 (fr) 1988-05-03 1988-05-03 Dérouleur de fil métallique

Country Status (5)

Country Link
EP (1) EP0340322B1 (fr)
JP (1) JPH0266069A (fr)
AT (1) ATE83467T1 (fr)
DE (1) DE3876789D1 (fr)
ES (1) ES2036233T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744110A1 (fr) * 1996-01-30 1997-08-01 Ona Electro Erosion Systeme de controle de debobinage de fil pour machine d'electroerosion
DE19723635C2 (de) * 1997-06-05 1999-03-25 Witels App Masch Albert Gmbh Abspulrichter für draht- oder mehrdrahtförmiges Gut
CN113860079B (zh) * 2021-09-28 2023-06-02 湖南湘鹤集团电缆科技股份有限公司 一种电缆加工多生产线放线导向装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025169B (de) * 1953-12-15 1958-02-27 Hans Brucker Dipl Ing Anordnung zum Messen, Steuern bzw. Regeln des Zuges an Maschinen mit durchlaufendem Material bei ungleichmaessiger Laufgeschwindigkeit
CH385774A (de) * 1959-10-06 1964-12-31 Standard Telephon & Radio Ag Automatischer Antriebsstabilisator für Wickelmaschinen
FR1361522A (fr) * 1963-04-11 1964-05-22 Thomson Houston Comp Francaise Perfectionnements apportés aux dispositifs d'enroulement des fils et câbles ou desarticles flexibles analogues
GB1163983A (en) * 1967-03-28 1969-09-10 Bekaert Pvba Leon Improvements relating to the Winding of Strand Material
US3556373A (en) * 1968-10-31 1971-01-19 Comstock & Wescott Tensioning apparatus
JPS6064955U (ja) * 1983-10-11 1985-05-08 タナツク・エンジニヤリング株式会社 巻線機のテンシヨン装置

Also Published As

Publication number Publication date
ES2036233T3 (es) 1993-05-16
JPH0266069A (ja) 1990-03-06
DE3876789D1 (de) 1993-01-28
EP0340322A1 (fr) 1989-11-08
ATE83467T1 (de) 1993-01-15

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