EP3225325B1 - Outil de bobinage pour machines à enroulement de ressort - Google Patents

Outil de bobinage pour machines à enroulement de ressort Download PDF

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Publication number
EP3225325B1
EP3225325B1 EP17156349.7A EP17156349A EP3225325B1 EP 3225325 B1 EP3225325 B1 EP 3225325B1 EP 17156349 A EP17156349 A EP 17156349A EP 3225325 B1 EP3225325 B1 EP 3225325B1
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EP
European Patent Office
Prior art keywords
coiling
tool
tool holder
tool according
insert
Prior art date
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Active
Application number
EP17156349.7A
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German (de)
English (en)
Other versions
EP3225325B2 (fr
EP3225325A1 (fr
Inventor
Alexander JANNOTTI
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.)
Wafios AG
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Wafios AG
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Publication of EP3225325A1 publication Critical patent/EP3225325A1/fr
Publication of EP3225325B1 publication Critical patent/EP3225325B1/fr
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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
    • B21F3/00—Coiling wire into particular forms
    • 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
    • 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
    • B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like

Definitions

  • the invention relates to a winding tool for a spring coiling machine, with a tool holder and a removable wind insert, which is attached to the tool holder.
  • the wire coming from a wire retraction is advanced against one or two wind fingers or against wind pins, deflected by this on a circular path and shaped as a spring.
  • the EP 2 520 384 A1 describes a wind tool and forms the basis for the preamble of claim 1.
  • a winch insert is used, which is exchangeably and adjustably mounted in a tool holder and held there with a Pratzenan für us.
  • different alignments and positions of the winch insert can be adjusted via a large number of adjusting screws.
  • this known tool however, there is a large number of different, partly rotatable individual elements, which is rather complicated in the overall arrangement and requires a relatively large amount of space.
  • the US Pat. No. 7,082,797 B1 describes a wind tool, in which the winch insert is inserted into a recessed receptacle corresponding to its shape in the front end region of the tool holder and fastened there by means of a screw.
  • the tool holder is provided at its front end, where the winch insert protrudes from it, with a lateral broadening, which leads to that z. B.
  • two such tools can not be very closely placed side by side or moved together.
  • Windewerkzeug the winch insert attached to the tool holder, if it can not be used further due to wear, must be replaced, which is relatively expensive.
  • a Windewerkzeug of the type mentioned is in the spring coiling machine from the US 4,387,585 used. It consists of a freely rotatable roller, which is attached to a tool holder and against which the conveyed wire starts for deflection. Such winders are preferably used in large machines in which a considerable friction between the tool and the workpiece occurs. However, it is necessary to use for the rotatable mounting of the Winderolle fitting screws, bearings, seals and lubrication, which is considerably expensive. In the case of wear on the Winderolle or other damage, the Winderolle must be replaced, which means a significant installation effort and is costly.
  • the present invention seeks to propose a wind tool of the type mentioned, which is the same quickly reusable in the event of wear or breakage of the use of the wind without a change.
  • the winch insert comprises a cylindrical base and, axially adjacent to this, a wind body, wherein mounted in the assembled state of the cylindrical base is rotatably mounted on a formed on the front end portion of the tool holder support surface, and At its front end region opposite this area abuts against a support section which defines the support surface there, extending in the manner of a circular segment, and in that the winch insert is fastened to the tool holder via a central tensioning means.
  • the winding tool according to the invention When installed in the spring-winding machine, the winding tool according to the invention is set up once with respect to its axial position. Thereafter, the position and position of the Windewerkmaschines no longer needs to be changed, since even in the event of wear, breakage of the use of wind o. ⁇ . Only the central clamping something solved, then the use of wind a bit further rotated and then the clamping means are tightened again got to. This is made possible by the non-rotatable attachment of the winch insert to the tool holder, through which, unlike a rotatable roller, occurring wear, breakage o. ⁇ . During winding only at the point where the wire starts against the winch insert can occur.
  • the winch insert which is mounted non-rotatably on the tool holder, with its the front of the tool holder (and thus the point of contact of the wire to be twisted) back facing away from the supporting step, which is formed on the tool holder, from, so that on the forces acting on the winch are not (or only to a small extent) to be absorbed by the central tensioning means, the essential part of the forces to be absorbed being supported by the supporting step.
  • a further preferred embodiment of the invention consists in the fact that on the side facing the support surface of the tool holder, an effective in the circumferential direction screening is attached to the bearing surface of the tool holder associated with a corresponding latching counter element and mounted so that it a rapid solution of a lock for a quick further rotation of the winch use on the tool holder with a subsequent reclosing allowed.
  • such a grid in the form of a circumferential toothing or in the form of radially extending grooves may be formed on the winch insert, which cooperate with appropriate counter-elements, such as with feather keys or with pins in the support surface of the tool holder form fit.
  • the height of the support step approximately corresponds to the axial thickness of the cylindrical base, so that the peripheral surface of the support base is available in its entire height locally for the transmission of the two forces acting locally.
  • the wind body present axially next to the support base can be provided in any suitable form, but is particularly preferably designed to be circular or else in the form of a polygonal body. Wind body and support base are preferably integrally molded.
  • the wind body is provided at its periphery with a circumferential groove for wire guidance.
  • the winch insert preferably consists of hard metal, tool steel, ceramic or a fiber composite material.
  • Fig. 1 is a perspective oblique view of the structure of a wire forming machine in the form of a spring coiling machine 1 (only in principle) shown.
  • two wind units 7a and 7b are arranged one above the other, wherein one (in Fig. 1 but not shown) slope device may be present.
  • the spring coiling machine 1 according to Fig. 1 is further provided with a cutting unit 8, which operates with a movable cutting tool 9, which cooperates with a cutting mandrel 10 during the cutting process.
  • Each winch unit 7a, 7b is provided with a wind tool 11, which, like the Fig. 1 shows, each attached to a lever 12a and 12b.
  • Each of these levers 12a, 12b is in turn moved via an associated control cam 14a or 14b with the interposition of a respective guided on the corresponding control cam roller 13a and 13b, wherein each of the control cams 14a and 14b is driven by its own programmable servo motor.
  • the drive of the control cams 14a, 14b takes place intermittently both forward, as well as turning backwards.
  • Fig. 2 is a Windewerkmaschine 11 in perspective and in Fig. 3 the same wind tool shown in an exploded view. At first reference will be made to these figures.
  • the Windewerkmaschine 11 first comprises an elongated tool holder 15 which at its front end portion (in the FIGS. 2 and 3 : overhead End region), which is facing the wire 5 in the mounted state, has a substantially flat support surface 16 which is bounded at its front end region opposite the region of a circular section extending support step 17.
  • This support surface 16 is open towards the front end of the tool holder 15 (see. Fig. 3 ), with mounted wind insert 18 this at the front end of the tool holder 15 projects beyond this forward (see Fig. 2 ).
  • the winch insert 18 For mounting the winch insert 18 is fixed on the support surface 16 via a central fastening screw 19, which is screwed into a threaded bore 20 which is centrally mounted in the support surface 16 of the tool holder 15.
  • the winch insert 18 includes, like the FIGS. 2 and 3 show a lower (ie the support surface 16 facing) cylindrical base 21, to the axially directly (and on the side facing away from the support surface 16 of the cylindrical base 21), a wind body 22 connects.
  • This wind body 22 is provided at its periphery with a circumferential Winderille 23, against which the conveyed wire 5 starts in operation and is deflected by her to a circular path and formed into a helical shape.
  • FIGS. 4 and 5 once again in a single representation show a wind body 22 in a circular form (namely Fig. 4 : Perspective view of the front, and Fig. 5 : Perspective view of the back).
  • Fig. 3 How out Fig. 3 can be removed is perpendicular to the longitudinal extension of the tool holder 15 in the support surface 16, passing through the threaded bore 20, a rectilinear groove 25 mounted in the two parallel keys 26, each on one side of the threaded bore 20 at the local end of the receiving groove 25, are used and fastened in each case via a fastening screw 27 in the groove 25.
  • the depth of the receiving groove 25 is chosen so that the passport springs 26 used there in the mounted state on the open top of the receiving groove 25 protrude and protrude when mounted wind body 22 each in one of the attached there, radially star-shaped outwardly extending grooves 24, thereby a rotationally fixed connection of the wind body 22 with the tool holder 15 is created.
  • Winderolle 22 For the shape of the wind insert 18 but also other than in the FIGS. 2 to 5 training shown as a Winderolle 22 are used.
  • the winch insert 18 with a polygonal body 28, which is also provided with a circumferential Winderille 23, in which case the drawing of the Fig. 6 expressly referred to as essential.
  • the polygon body 28 is an octagonal body, and here as well a toe-cornered or dodecagonal or even hexagonal body could be used.
  • the height H of the support stage 17 corresponds in the illustrated embodiment, the axial length h of the cylindrical base 21, the thus in its on the support surface 16th assembled state can thus be supported over the entire height H of the support level 17 under load.
  • the winch insert 18 may be made of any suitable material, but is preferably made of cemented carbide, tool steel, ceramic or a fiber composite.

Claims (11)

  1. Outil de bobinage (11) pour machine à enroulement de ressort (1), comprenant un porte-outil (15) et un insert de bobinage remplaçable (18) qui est fixé au porte-outil (15), caractérisé en ce que l'insert de bobinage (18) comprend une douille cylindrique (21) et, axialement à côté de celle-ci, un corps de bobinage (22, 28), la douille cylindrique (21), dans l'état monté, reposant sur une surface d'appui (16) réalisée au niveau de la région d'extrémité avant du porte-outil (15), s'appliquant, au niveau de sa région opposée à cette région d'extrémité avant, contre un étage d'appui (17) s'étendant en forme de portion de cercle, limitant à cet endroit la surface d'appui (16), et en ce que l'insert de bobinage (18) est monté de manière solidaire en rotation et est fixé par le biais d'un moyen de serrage central (19) sur le porte-outil (15).
  2. Outil de bobinage selon la revendication 1, caractérisé en ce qu'un ressort d'ajustement (26) ou une goupille de blocage sont prévus sur le porte-outil (15) pour le montage solidaire en rotation de l'insert de bobinage (18).
  3. Outil de bobinage selon la revendication 1 ou 2, caractérisé en ce que le moyen de serrage central est une vis (19), un boulon fileté ou une griffe de serrage.
  4. Outil de bobinage selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au niveau du côté de la douille cylindrique (21) tourné vers la surface d'appui (16) du porte-outil (15) est monté un encliquetage (24) agissant dans sa direction périphérique, lequel est associé à un élément conjugué d'encliquetage (26) correspondant sur la surface d'appui (16) du porte-outil (15).
  5. Outil de bobinage selon la revendication 4, caractérisé en ce que l'encliquetage est prévu sous la forme d'une denture.
  6. Outil de bobinage selon la revendication 4, caractérisé en ce que l'encliquetage est réalisé sous la forme de rainures s'étendant radialement (24) sur la douille cylindrique (21), lesquelles coopèrent avec des ressorts d'ajustement (26) des goupilles dans la surface (16) du porte-outil (15) .
  7. Outil de bobinage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la hauteur (H) de l'étage d'appui (17) correspond approximativement à la longueur axiale (h) de la douille cylindrique (21).
  8. Outil de bobinage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le corps de bobinage (22) est réalisé sous forme circulaire.
  9. Outil de bobinage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le corps de bobinage est réalisé sous forme de corps polygonal (28).
  10. Outil de bobinage selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le corps de bobinage (22, 28) est pourvu au niveau de sa périphérie d'une gorge périphérique (23) pour le guidage d'un fil.
  11. Outil de bobinage selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'insert de bobinage (18) se compose de métal dur, d'acier à outils, de céramique ou d'un matériau composite renforcé par des fibres.
EP17156349.7A 2016-03-31 2017-02-15 Outil de bobinage pour machines à enroulement de ressort Active EP3225325B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016105935.8A DE102016105935B4 (de) 2016-03-31 2016-03-31 Windewerkzeug für eine Federwindemaschine

Publications (3)

Publication Number Publication Date
EP3225325A1 EP3225325A1 (fr) 2017-10-04
EP3225325B1 true EP3225325B1 (fr) 2018-09-12
EP3225325B2 EP3225325B2 (fr) 2022-03-09

Family

ID=58098463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17156349.7A Active EP3225325B2 (fr) 2016-03-31 2017-02-15 Outil de bobinage pour machines à enroulement de ressort

Country Status (3)

Country Link
EP (1) EP3225325B2 (fr)
CN (1) CN107262632A (fr)
DE (1) DE102016105935B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3698897A1 (fr) 2019-02-21 2020-08-26 WTH Laqua GmbH Outil d'enroulement pour une machine à enroulement de ressort

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387585A (en) 1981-01-13 1983-06-14 Torin Corporation Spring coiling machine with improved coil starter means
EP0344178B1 (fr) 1987-01-16 1991-07-03 Gerhard Baisch Dispositif d'enroulement pour machine d'enroulement a ressort avec elements pre-reglables remplacables
US7082797B1 (en) 2003-12-19 2006-08-01 Wiese Thomas R Coiling point tool for spring coiling machine, and method of using same
DE102011100434B4 (de) 2011-05-04 2014-11-20 Wafios Aktiengesellschaft Windewerkzeug für Federwindemaschinen
US20150040634A1 (en) 2012-03-24 2015-02-12 Numalliance Bending machine having a bending head that is movable about a stationary bending shank

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2623377Y (zh) * 2003-06-20 2004-07-07 中国重型汽车集团有限公司 自动绕簧机直径调整机构
CN202021271U (zh) * 2010-12-28 2011-11-02 四川川润股份有限公司 一种多机通用模具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387585A (en) 1981-01-13 1983-06-14 Torin Corporation Spring coiling machine with improved coil starter means
EP0344178B1 (fr) 1987-01-16 1991-07-03 Gerhard Baisch Dispositif d'enroulement pour machine d'enroulement a ressort avec elements pre-reglables remplacables
US7082797B1 (en) 2003-12-19 2006-08-01 Wiese Thomas R Coiling point tool for spring coiling machine, and method of using same
DE102011100434B4 (de) 2011-05-04 2014-11-20 Wafios Aktiengesellschaft Windewerkzeug für Federwindemaschinen
US20150040634A1 (en) 2012-03-24 2015-02-12 Numalliance Bending machine having a bending head that is movable about a stationary bending shank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3698897A1 (fr) 2019-02-21 2020-08-26 WTH Laqua GmbH Outil d'enroulement pour une machine à enroulement de ressort
EP3698897B1 (fr) 2019-02-21 2021-03-10 WTH Laqua GmbH Outil d'enroulement pour une machine à enroulement de ressort

Also Published As

Publication number Publication date
CN107262632A (zh) 2017-10-20
DE102016105935B4 (de) 2018-04-26
EP3225325B2 (fr) 2022-03-09
EP3225325A1 (fr) 2017-10-04
DE102016105935A1 (de) 2017-10-05

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