EP3698897A1 - 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
EP3698897A1
EP3698897A1 EP19158511.6A EP19158511A EP3698897A1 EP 3698897 A1 EP3698897 A1 EP 3698897A1 EP 19158511 A EP19158511 A EP 19158511A EP 3698897 A1 EP3698897 A1 EP 3698897A1
Authority
EP
European Patent Office
Prior art keywords
bending roller
base
support collar
tool according
winding 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.)
Granted
Application number
EP19158511.6A
Other languages
German (de)
English (en)
Other versions
EP3698897B1 (fr
EP3698897B2 (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
Publication of EP3698897B1 publication Critical patent/EP3698897B1/fr
Application granted granted Critical
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 coiling tool for a spring coiling machine, comprising a bending roller holder with a contact plate, on which a bending roller provided with a radially circumferential winding groove is non-rotatably fastened via a clamping screw and which has a support collar for supporting the bending roller.
  • Coiling tools of the aforementioned type are used in so-called spring coiling machines, in which a wire conveyed via a wire feeder is pushed forward against one or more coiling fingers and is deflected by them onto a circular path, whereby the wire is deformed in a helical shape.
  • a spring coiling machine with an exchangeable coiling tool is for example in the WO 88/05352 A1 described.
  • a winding carbide is held interchangeably in a form-fitting manner in a winding tool.
  • FIG US 7,082,797 B1 A similar construction of a winding tool is also shown in FIG US 7,082,797 B1 described.
  • the EP 3 225 325 B1 proposed to design the winch insert in the form of a cylindrical base with a winch body arranged axially next to it, the cylindrical base being seated on a support surface formed on the front end region of the tool holder and resting against a support step that delimits the support surface in the shape of a segment of a circle.
  • the contact surface of the cylindrical base is provided with star-shaped grooves in which parallel keys engage, which are arranged in a receiving groove made in the support surface of the tool holder and fastened in the groove via a fastening screw.
  • the disadvantage of the proposed solution is that it is very expensive to manufacture. In addition, assembly is difficult due to the large number of components.
  • the invention aims to remedy this.
  • 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 manufactured with a minimum of 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.
  • a winch tool of the aforementioned type in which the winch insert can be used in different rotational positions and which can be manufactured with a minimum of effort with a reduced component depth.
  • the bending roller has a base with a non-circular cross-section on its side facing the contact plate, the support collar having a contact surface facing the base and enclosing it in some areas, which is designed to correspond to the outer circumferential surface of the base facing this, is a rotationally fixed fastening of the bending roller made possible 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 polygonal engagements to accommodate several edges of the base.
  • the cross section advantageously has the shape of a hexagon, an octagon, an octagon or a twelve-sided.
  • the outer surface of the base is provided with teeth. This results in a very fine rotary positioning the bending roller in the winding tool, whereby the service life is further increased.
  • the contact surface of the support collar has notches for engaging edges or teeth of the base of the bending roller. This enables the rotational positioning of the bending roller on the contact plate to be fine-adjusted while at the same time making the bending roller holder easier to manufacture.
  • the bending roller advantageously projects over the contact plate in some areas, in particular on its side opposite the support collar. This prevents the bending roller holder from influencing the wire bending process.
  • the bending roller has a reduced diameter at its end opposite the base, the bending groove merging into a circumferential bevel over a radius. This improves the inlet and outlet behavior of the wire fed in via a wire feed.
  • the bending roller has a central stepped bore for the implementation of the clamping screw, which is designed such that the screw head of the clamping screw is completely received by the latter. This achieves complete integration of the clamping screw.
  • the winding tool 1 selected as an exemplary embodiment is designed for use in a winding unit of a wire forming machine, as is shown, for example, in FIG EP 3,225,325 D1 is described.
  • 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 fastened via a clamping screw 4.
  • the bending roller holder 2 consists essentially of a clamping mandrel 21, on which a stop base 22 is formed, to which a bending roller receptacle 23 is connected.
  • the bending roller receptacle 23 essentially comprises a contact plate 24 on which a support collar 25 is molded.
  • the support collar 25 has a semi-ring-shaped contact surface 26 which is positioned orthogonally to the contact plate 24 and which is provided with notches 27 arranged offset to one another.
  • the contact surface 26 can also have a polygonal cross section have in the manner of a polygon.
  • a threaded bore 28 is made in the system plate 24 concentric 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 winding groove 31 at one end, which merges into a circumferential phase 33 over a radius 32.
  • a base 34 of reduced diameter is molded onto the cylindrical bending roller 3.
  • the base 34 has an octagonal cross section.
  • a stepped bore 35 is made by the bending roller 3, the enlarged diameter section of which serves to receive the head 41 of a clamping screw 4, which is completely received by this section.
  • the base 34 of the bending roller 3 rests against the system plate 24 in such a way that the stepped bore 35 of the bending roller 3 is aligned with the threaded hole 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 roll 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, and the clamping screw 4 is screwed into the threaded bore 28 thereof.
  • the screw head 41 of the clamping screw 4 is completely enclosed by the enlarged diameter section of the stepped bore 35.
  • the bending roller 3 is only stressed in a limited area of the coiling 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 again 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 coiling machine can then be resumed without the need to replace the bending roller 3.
  • this 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)
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 true EP3698897A1 (fr) 2020-08-26
EP3698897B1 EP3698897B1 (fr) 2021-03-10
EP3698897B2 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)

Country Link
EP (1) EP3698897B2 (fr)

Cited By (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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005352A1 (fr) 1987-01-16 1988-07-28 Gerhard Baisch Dispositif d'enroulement pour machine d'enroulement a ressort avec elements pre-reglables remplaçables
US7082797B1 (en) 2003-12-19 2006-08-01 Wiese Thomas R Coiling point tool for spring coiling machine, and method of using same
DE102007048429A1 (de) * 2007-10-09 2009-04-16 Wth Laqua Gmbh Rollenwickelstift
DE102011100434A1 (de) * 2011-05-04 2012-11-08 Wafios Aktiengesellschaft Windewerkzeug für Federwindemaschinen
EP3225325A1 (fr) 2016-03-31 2017-10-04 WAFIOS Aktiengesellschaft Outil de bobinage pour machines à enroulement de ressort

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915784C1 (fr) 1989-05-13 1990-07-05 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De
DE102016106684B4 (de) 2016-04-12 2022-09-08 Kemmer Hartmetallwerkzeuge Gmbh Trägerwerkzeug für Schneidplatten mit mehreren Schneiden

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005352A1 (fr) 1987-01-16 1988-07-28 Gerhard Baisch Dispositif d'enroulement pour machine d'enroulement a ressort avec elements pre-reglables remplaçables
US7082797B1 (en) 2003-12-19 2006-08-01 Wiese Thomas R Coiling point tool for spring coiling machine, and method of using same
DE102007048429A1 (de) * 2007-10-09 2009-04-16 Wth Laqua Gmbh Rollenwickelstift
DE102011100434A1 (de) * 2011-05-04 2012-11-08 Wafios Aktiengesellschaft Windewerkzeug für Federwindemaschinen
EP3225325A1 (fr) 2016-03-31 2017-10-04 WAFIOS Aktiengesellschaft Outil de bobinage pour machines à enroulement de ressort
EP3225325B1 (fr) 2016-03-31 2018-09-12 WAFIOS Aktiengesellschaft Outil de bobinage pour machines à enroulement de ressort

Cited By (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

Also Published As

Publication number Publication date
EP3698897B1 (fr) 2021-03-10
EP3698897B2 (fr) 2023-12-27

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