EP3698897B2 - Outil d'enroulement pour une machine à enroulement de ressort - Google Patents

Outil d'enroulement pour une machine à enroulement de ressort Download PDF

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Publication number
EP3698897B2
EP3698897B2 EP19158511.6A EP19158511A EP3698897B2 EP 3698897 B2 EP3698897 B2 EP 3698897B2 EP 19158511 A EP19158511 A EP 19158511A EP 3698897 B2 EP3698897 B2 EP 3698897B2
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EP
European Patent Office
Prior art keywords
bending roller
base
coiling
tool according
coiling tool
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.)
Active
Application number
EP19158511.6A
Other languages
German (de)
English (en)
Other versions
EP3698897A1 (fr
EP3698897B1 (fr
Inventor
Michael Laqua
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.)
Wth Laqua GmbH
Original Assignee
Wth Laqua GmbH
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
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Application filed by Wth Laqua GmbH filed Critical Wth Laqua GmbH
Priority to EP19158511.6A priority Critical patent/EP3698897B2/fr
Publication of EP3698897A1 publication Critical patent/EP3698897A1/fr
Application granted granted Critical
Publication of EP3698897B1 publication Critical patent/EP3698897B1/fr
Publication of EP3698897B2 publication Critical patent/EP3698897B2/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
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/06—Coiling wire into particular forms helically internally on a hollow form
    • 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
    • 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
    • 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
    • B21F35/00—Making springs from wire

Definitions

  • the invention relates to a winding tool for a spring winding machine, comprising a bending roller holder with a contact plate, to which a bending roller provided with a radially circumferential winding groove is fastened in a rotationally fixed manner via a tensioning screw and which has a support collar for supporting the bending roller.
  • Winding tools of the aforementioned type are used in so-called spring winding machines, in which a wire conveyed via a wire feeder is advanced against one or more winding fingers and is deflected onto a circular path by them, whereby the wire is deformed in a helical shape.
  • a spring winding machine with an exchangeable winding tool is, for example, in the WO 88/05352 A1 described.
  • a winch carbide is held in a changeable, form-fitting manner in a winch tool.
  • a similar structure of a winch tool is still in use US 7,082,797 B1 described.
  • EP 3 225 325 B1 suggested the use of winch in
  • a cylindrical base with a winch body arranged axially next to it the cylindrical base being placed on a support surface formed on the front end region of the tool holder and resting against a support step which extends in the shape of a circular section and delimits the support surface.
  • the contact surface of the cylindrical base is provided with star-shaped grooves into which keyways engage, which are arranged in a receiving groove made in the support surface of the tool holder and are fastened in the groove via a fastening screw.
  • the disadvantage of the proposed solution is that it is very complex to produce. In addition, assembly is difficult due to the high variety of components.
  • the invention aims to provide a remedy here.
  • the invention is based on the object of providing a winch tool of the aforementioned type, in which the winch insert can be positioned in different positions and which can be produced with minimal effort with a reduced component depth. According to the invention, this object is achieved by the features of the characterizing part of patent claim 1.
  • the invention provides a winch tool of the aforementioned type, in which the winch insert can be used in different rotational positions and which can be produced with minimal effort with a reduced component depth.
  • the bending roller has a base with a non-round cross section on its side facing the contact plate, the support collar having a contact surface facing the base and partially surrounding it, which is designed to correspond to the outer lateral surface of the base facing this, ensures that the bending roller is fastened in a rotationally fixed manner in different rotational positions on the contact plate, the winding tool being formed from only three components.
  • the base has a cross section in the form of a regular polygon, with the support collar having interventions in the manner of a polygon for receiving several edges of the base.
  • the cross section advantageously has the shape of a hexagon, eight-point, ten-point or twelve-point.
  • the lateral surface of the base is provided with teeth. This enables very fine rotational positioning of the bending roller in the winding tool, which further increases the service life.
  • the contact surface of the support collar has notches for engaging edges or teeth of the base of the bending roller. This makes it possible to finely adjust the rotational positioning of the bending roller on the contact plate while at the same time making it possible to produce the bending roller holder with minimal effort.
  • the bending roller advantageously protrudes over the contact plate in some areas, particularly on its side opposite the support collar. This prevents the bending roller holder from influencing the wire bending process.
  • the bending roller is designed to have a reduced diameter at its end opposite the base, with the bending groove merging over a radius into a circumferential chamfer. This improves the entry and exit behavior of the wire fed via a wire conveyor.
  • the bending roller has a central stepped bore for the passage of the clamping screw, which is designed such that the screw head of the clamping screw is completely received by it. This achieves complete integration of the clamping screw.
  • the winding tool 1 chosen as an exemplary embodiment is designed for use in a winding unit of a wire forming machine, such as that in EP 3 225 325 D1 is described. Such wire forming machines are well known to those skilled in the art.
  • the winding tool 1 is formed from a bending roller holder 2, to which a bending roller 3 is attached via a clamping screw 4.
  • the bending roller holder 2 essentially consists of a clamping mandrel 21, on which a stop base 22 is formed, to which a bending roller holder 23 is connected.
  • the bending roller receptacle 23 essentially comprises a contact plate 24, onto which a support collar 25 is formed.
  • the support collar 25 has a semi-annular contact surface 26 which is positioned orthogonally to the contact plate 24 and which is provided with notches 27 arranged offset from one another.
  • the contact surface 26 can also have a polygonal cross section in the manner of a polygon.
  • a threaded hole 28 is made in the system plate 24 concentrically to the support collar 25.
  • the bending roller holder 2 is made in one piece from hard metal.
  • the bending roller 3 is essentially cylindrical and is provided with a circumferential winch groove 31 at one end, which merges into a circumferential phase 33 via a radius 32.
  • a base 34 with a reduced diameter is formed on the cylindrical bending roller 3.
  • the base 34 has an octagonal cross section.
  • a stepped bore 35 is introduced through the bending roller 3, the diameter-enlarged section of which serves to accommodate the head 41 of a clamping screw 4, which is completely accommodated by this section.
  • the bending roller 3 rests with its base 34 on the system plate 24 in such a way that the stepped bore 35 of the bending roller 3 is aligned with the threaded bore 28 of the bending roller holder 2.
  • the corners of the octagonal base 34 engage in the notches 27 of the support collar 25 of the bending roller holder 2.
  • the bending roller 3 is fastened to the bending roller holder 2 via a clamping screw 4, which is guided through the stepped bore 35, into the threaded bore 28 of which the clamping screw 4 is screwed.
  • the screw head 41 of the clamping screw 4 is completely surrounded by the diameter-enlarged section of the stepped bore 35.
  • the bending roller 3 is only stressed in a limited area of the winding groove 31.
  • the bending roller 3 can be rotated gradually after loosening the clamping screw 4 until the edges of the base 34 of the bending roller 3 engage in the notches 27 of the support collar 25 of the bending roller holder 2, after which the clamping screw 4 is tightened again can be. Operation of the spring winding machine can then be resumed without the bending roller 3 having to be replaced.
  • the polygonal design of the base 34 it can also be provided with a toothing all around, the contact surface 26 of the support collar 25 of the bending roller holder 2 being provided with a corresponding toothing.

Landscapes

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

Claims (7)

  1. Outil d'enroulement (1) pour une machine à enroulement de ressort, comprenant un porte-galet de cintrage (2) avec plaque d'applique (24) contre laquelle est fixé, via une vis de serrage (4) l'empêchant de tourner, un galet de cintrage (3) muni d'une gorge d'enroulement (31) périphérique radiale, et qui présente un col d'appui (25) du galet de cintrage (3), caractérisé en ce que le galet de cintrage (3) présente, sur son côté regardant la plaque d'applique (24), un socle (34) de section non ronde, sachant que le col d'appui (25) présente une surface d'applique (26) regardant le socle (34) et la ceinturant localement, surface dont la configuration épouse la surface enveloppante extérieure du socle (34) la regardant de telle sorte qu'une fixation empêchant la rotation du galet de cintrage est possible dans différentes positions de rotation sur la plaque d'applique, sachant que l'outil de enroulement est formé uniquement de trois composants.
  2. Outil d'enroulement selon la revendication 1, caractérisé en ce que le socle (34) présente une section en forme de polygone régulier, en particulier en forme d'hexagone, d'octogone, de décagone ou de dodécagone, sachant que le col d'appui (25) présente des moyens de pénétration de forme polygonale permettant de recevoir plusieurs côtés du socle (34).
  3. Outil d'enroulement selon la revendication 1, caractérisé en ce que la surface enveloppante du socle (34) est munie d'une denture.
  4. Outil d'enroulement selon l'une des revendications précédentes, caractérisé en ce la surface d'applique (26) du col d'appui (25) présente des entailles (27) pour la pénétration d'arêtes ou de dents du socle (34) du galet de cintrage (3).
  5. Outil d'enroulement selon l'une des revendications précédentes, caractérisé en ce que le galet de cintrage (3) dépasse localement, notamment sur son côté situé en face du col d'appui (25), au-delà de la plaque d'appui (24).
  6. Outil d'enroulement selon l'une des revendications précédentes, caractérisé en ce que l'outil de cintrage (3) est configuré d'un diamètre réduit en son extrémité située en face du socle (34), sachant que la gorge d'enroulement (31) devient, via un rayon (32), un chanfrein (33) périphérique.
  7. Outil d'enroulement selon l'une des revendications précédentes, caractérisé en ce que le rouleau de cintrage (3) présente un alésage centré étagé (35) pour faire passer la vis de serrage (4), alésage qui est configuré de sorte que la tête (41) de la vis de serrage (4) soit entièrement logée dans ledit alésage.
EP19158511.6A 2019-02-21 2019-02-21 Outil d'enroulement pour une machine à enroulement de ressort Active EP3698897B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19158511.6A EP3698897B2 (fr) 2019-02-21 2019-02-21 Outil d'enroulement pour une machine à enroulement de ressort

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19158511.6A EP3698897B2 (fr) 2019-02-21 2019-02-21 Outil d'enroulement pour une machine à enroulement de ressort

Publications (3)

Publication Number Publication Date
EP3698897A1 EP3698897A1 (fr) 2020-08-26
EP3698897B1 EP3698897B1 (fr) 2021-03-10
EP3698897B2 true EP3698897B2 (fr) 2023-12-27

Family

ID=65520124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19158511.6A Active EP3698897B2 (fr) 2019-02-21 2019-02-21 Outil d'enroulement pour une machine à enroulement de ressort

Country Status (1)

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EP (1) EP3698897B2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115788145A (zh) * 2022-11-15 2023-03-14 贵州电网有限责任公司 一种拉线辅助工具

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701088A1 (de) 1987-01-16 1988-07-28 Baisch Gerhard Dipl Ing Fh Windeeinrichtung fuer federwindemaschinen mit auswechselbaren, voreinstellbaren elementen
DE3915784C1 (fr) 1989-05-13 1990-07-05 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De
US7082797B1 (en) 2003-12-19 2006-08-01 Wiese Thomas R Coiling point tool for spring coiling machine, and method of using same
DE102007048429B4 (de) * 2007-10-09 2009-07-16 Wth Laqua Gmbh Rollenwickelstift
DE102011100434B4 (de) * 2011-05-04 2014-11-20 Wafios Aktiengesellschaft Windewerkzeug für Federwindemaschinen
DE102016105935B4 (de) 2016-03-31 2018-04-26 Wafios Aktiengesellschaft Windewerkzeug für eine Federwindemaschine
DE102016106684B4 (de) 2016-04-12 2022-09-08 Kemmer Hartmetallwerkzeuge Gmbh Trägerwerkzeug für Schneidplatten mit mehreren Schneiden

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Publication number Publication date
EP3698897A1 (fr) 2020-08-26
EP3698897B1 (fr) 2021-03-10

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