EP0504666B1 - Fang- und Haltemagnet - Google Patents

Fang- und Haltemagnet Download PDF

Info

Publication number
EP0504666B1
EP0504666B1 EP92103740A EP92103740A EP0504666B1 EP 0504666 B1 EP0504666 B1 EP 0504666B1 EP 92103740 A EP92103740 A EP 92103740A EP 92103740 A EP92103740 A EP 92103740A EP 0504666 B1 EP0504666 B1 EP 0504666B1
Authority
EP
European Patent Office
Prior art keywords
magnet
core
catch
pole
hold
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
EP92103740A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0504666A1 (de
Inventor
Dietmar Harting
Ernst-Heinrich Dipl.-Ing. Harting
Wilhelm Gosewehr
Wolfgang Dipl.-Ing. Neuhaus
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.)
Harting Electronics GmbH and Co KG
Original Assignee
Harting Electronics GmbH 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 Harting Electronics GmbH and Co KG filed Critical Harting Electronics GmbH and Co KG
Publication of EP0504666A1 publication Critical patent/EP0504666A1/de
Application granted granted Critical
Publication of EP0504666B1 publication Critical patent/EP0504666B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions

Definitions

  • the invention relates to a catching and holding magnet according to the preamble of claim 1.
  • Such catch and hold magnets are used, for example, to control the knitting devices in textile machines.
  • a flat, knife-like part is generally provided as the magnet armature, which interacts with a knitting device of the textile machine.
  • the function, readiness or unwillingness to knit, weave or knit is selected.
  • the textile machines should work as quickly as possible, the magnet systems must be able to be operated at a high clock frequency.
  • a large number of knitting devices are usually controlled in a textile machine by individual magnet systems, so that it is also necessary for the magnet systems to be of extremely small volume.
  • an electromagnet which has an essentially double-T-shaped core, on the middle leg of which an excitation coil is provided.
  • a pair of poles is formed on both long sides, which can act, for example, on a knife-shaped armature part.
  • This magnet as a holding magnet, the armature parts being moved directly along the pole faces and being held here when the magnet is activated, ie prevented from moving further longitudinally or downward, is generally satisfactory.
  • this magnet As a catching and holding magnet, in which the knife-like armature parts are first drawn to this from a certain distance from the respective pole pair and only then held there, it has been found that the magnet / by the pulling forces exerted on the armature parts are not sufficiently large to ensure the required operational safety in all cases.
  • the invention is based on the object of developing a magnet system of the type mentioned in such a way that the achievable tightening force which is exerted on a knife-like, spaced-apart anchor part is increased without increasing the overall volume of the magnet system.
  • the magnet system should consist of just a few individual parts and be suitable for efficient, inexpensive large-scale production.
  • the magnetic core 1 shown in FIG. 1 is essentially double T-shaped, with an elongated central part 2 being provided, to the pole pieces 3, 3 ', which extend upwards and downwards at the ends, respectively; 4, 4 'are integrally formed.
  • the upward and downward facing pole pieces 3, 4 and 3 ', 4' each form a pair of poles (A and B).
  • flat projections 5 are provided, each pointing in the direction of the longitudinal axis X of the central part.
  • the magnetic core is provided with a coil former 8, on which an excitation winding 9 is wound.
  • the coil body is either assembled from two half-shells that encompass the magnetic core, or the coil body is molded around the magnetic core as a molded part - leaving the ends of the pole pieces free.
  • contact pieces 10 are provided, the winding-side ends of which are connected to the winding connections of the excitation winding. The contact pieces extend through the U-shaped recess 7 of the magnetic core.
  • a contact piece 11 is provided, which is arranged essentially within the U-shaped recess 7 of the magnetic core and is electrically conductively connected there to the magnetic core material.
  • the magnet system is inserted into a holder 12, and there are knife-like armature parts 13, 13 ', on which the pole pairs A, B act when the excitation winding 9 is energized.
  • the anchor parts are provided with a recess 14, which cooperates with a retaining lug 15 on the cooler. If appropriate, this retaining lug can also be formed directly on one of the poles or on one of the pole faces.
  • the armature parts which are connected to the knitting, knitting or weaving devices of a textile machine, are mechanically moved at a certain distance in front of the pole pairs A or B and are energized by the pole pairs when the excitation winding is energized until they are direct lie on the pole faces.
  • the respective retaining lug 15 gets into the recess 14 in the anchor part and holds it so tightly by means of hooking that the anchor part cannot execute any axial movement. Only when the energization of the excitation winding is switched off does the armature part drop, the hooking is released and the armature part can be moved in the axial direction Y.
  • FIG. 4 shows a magnet system with a modified magnetic core.
  • the magnetic core is joined along the longitudinal axis X in two partial cores 1 ', 1 under and while maintaining a gap 16. It may be provided that an intermediate layer 17 made of non-magnetic material is inserted into the gap.
  • This embodiment is preferably provided for an arrangement in which a knife-like armature part 13, 13 'is provided on both sides of the magnet system, which is controlled by the energization of the common excitation winding 9, with the separation of the magnetic core a reaction of the one magnet system side the other side is significantly reduced.
  • a knife-like armature part 13, 13 ' is provided on both sides of the magnet system, which is controlled by the energization of the common excitation winding 9, with the separation of the magnetic core a reaction of the one magnet system side the other side is significantly reduced.
  • Is z. B. at pole pair B the knife-shaped armature part 13 'offered at a certain distance to the pole pair, pulls energization of the magnet coil pole pair B, the armature part 13' and closes the magnetic circuit of this side.
  • the other side with pole pair A is virtually unaffected in this state and is able to attract anchor part 13 if it is offered at a certain distance afterwards. (The field lines of pole pair
  • the magnetic core 1 is provided with an additional central pole piece 18, 18 '.
  • the coil former is then designed to hold two partial coils (excitation windings 19, 19 ').
  • the sub-coils are preferably electrically connected in opposite rows, or each sub-coil is controlled separately.
  • Fig. 6 a similar magnet system as shown in Fig. 5 is shown, the pole pieces (3, 4 ') at the ends of the magnetic core 1 are each only half formed.
  • the transition 20 from the respective pole piece to the respective projection 5 is rounded for better flow introduction. This last measure may also be provided for the magnetic cores of the above-described embodiments.
  • a magnet system is shown in Fig. 7, which acts on the knife-shaped armature parts 13, 13 '.
  • a fixed flow guide behind it 21, 21 'made of magnetically conductive soft magnetic material In this case, anti-adhesive agents are provided on the surface of the flow guide piece in order to prevent magnetic "sticking".
  • the flux guide is used on the one hand to increase the attraction force and on the other hand to decouple neighboring magnets in order to prevent their mutual influence.
  • the distance between the pole faces of one core end is preferably less than the distance between the pole faces of the other core end, so that the magnet system as a whole has a conical shape.
  • the pole faces and possibly also the retaining lugs are surface-hardened or provided with a wear-resistant coating.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Magnetic Treatment Devices (AREA)
EP92103740A 1991-03-18 1992-03-05 Fang- und Haltemagnet Expired - Lifetime EP0504666B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4108601A DE4108601C2 (de) 1991-03-18 1991-03-18 Fang- und Haltemagnet
DE4108601 1991-03-18

Publications (2)

Publication Number Publication Date
EP0504666A1 EP0504666A1 (de) 1992-09-23
EP0504666B1 true EP0504666B1 (de) 1995-05-24

Family

ID=6427459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103740A Expired - Lifetime EP0504666B1 (de) 1991-03-18 1992-03-05 Fang- und Haltemagnet

Country Status (4)

Country Link
EP (1) EP0504666B1 (enrdf_load_stackoverflow)
JP (1) JPH0582332A (enrdf_load_stackoverflow)
DE (2) DE4108601C2 (enrdf_load_stackoverflow)
TW (1) TW214596B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4855933B2 (ja) 2005-04-12 2012-01-18 東洋ガラス株式会社 Ｇｒｉｎレンズの製造方法及びｇｒｉｎレンズ
DE202022100972U1 (de) 2022-02-21 2023-05-23 HARTING Automotive GmbH Kompakter Haltemagnet

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT34869B (de) * 1907-10-16 1908-10-26 Stefan Linda Vorrichtung zur Erzeugung eines Druckgases aus Wasserdampf und Verbrennungsprodukten.
BE790443A (fr) * 1971-10-26 1973-02-15 Siemens Ag Systeme electromagnetique avec corps magnetique, enroulement etarmatur
US3955164A (en) * 1972-10-12 1976-05-04 Lucas Aerospace Limited Electromagnetic force applying device
GB2165096B (en) * 1984-03-05 1987-12-31 Mitsubishi Mining & Cement Co Electromagnetic actuator apparatus
FR2568402B1 (fr) * 1984-07-24 1987-02-20 Telemecanique Electrique Electro-aimant a courant continu, en particulier pour appareil electrique de commutation
DE3505169C2 (de) * 1985-02-15 1995-04-06 Mannesmann Ag Betätigungsmagnet
DD259329A3 (de) * 1985-04-23 1988-08-24 Z Tazkeho Strojarstva Vysk Vyv Axialer gekapselter elektromagnet
JPS62188203A (ja) * 1986-02-13 1987-08-17 Omron Tateisi Electronics Co ヨ−ク
DD247297A1 (de) * 1986-03-31 1987-07-01 Pentacon Dresden Veb Haltemagnetsystem fuer fotografische kameras

Also Published As

Publication number Publication date
DE59202283D1 (de) 1995-06-29
EP0504666A1 (de) 1992-09-23
DE4108601C2 (de) 1995-06-29
JPH0582332A (ja) 1993-04-02
DE4108601A1 (de) 1992-09-24
TW214596B (enrdf_load_stackoverflow) 1993-10-11
JPH0586045B2 (enrdf_load_stackoverflow) 1993-12-09

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