DE2161377A1 - MAGNETIC ANCHORS FOR MAGNETIC ARRANGEMENTS UNDER IMPACT LOAD - Google Patents

Description

PATE NTA NWALT

741 Reutlingen / Wörtt. Hindenbursttr. 65 - T «idoa 3471g

Applicant ; company

Stoll & Co. 741 Reutlingen Stollweg 1

Magnetic anchor for magnet assemblies that are subject to shock loads

The invention relates to a magnet armature for magnet assemblies under shock load, for example for holding magnets on knitting machines, whose anchors are connected with Yerstellgliedera relatively large hatred.

It is known that the attractive force of a magnet, i.e. the force of the magnetic field originating from the magnet, increases with the distance of the armature from a Hagnetkern or Hagnetpolen decreases very sharply, and that the magnetic field strength, the Pulling on a lifted anchor is required,

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a multiple of the magnet laugh field strength is that sue balten an adjacent anchor is required. For this reason, electromagnets are designed, if possible, as so-called holding magnets, to which an armature is mechanically offered and which saves etiergias are only designed for a field strength that is sufficient to haul an offered anchor, but not for tightening a lifted anchor. Yeis & n the anchors of such holding magazines a relatively weak hatred or are the anchors with large € k * & v. £ twindigk «it placed against the pole faces of the holding magnets, there is a risk that the armature of the A * i. * gea will become one Suffer rebound, thereby lifting off the pole faces again and no longer being sucked against the pole faces due to insufficient strength of the magnets, although the holding magnet is excited. The danger of one Falling off of the relatively heavy armature from the energized holding magnet is also given when on the whole Magnet arrangement, the holding magnet or the armature alone shocks are exerted.

The disadvantage mentioned occurs in increased hate on when magnet armatures are brought up at an angle to the core or pole of a holding magnet and not parallel to its attachment surfaces, or when the armature when offered mechanically is raised differently.

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The invention is based on 41 «task» «reasons, the aforementioned Avoid and inen the disadvantage of known Haguetankers Magnetic anchor out of the way so that it can be used in significantly more powerful * sharks without increasing the power of the magnets is secured against falling off due to shock loads or improper mechanical offering *

According to the invention, this object is achieved by that the surface of the Hagaetankars, the sur plant against a magnetic core or against the pole pieces of a magnet arrives at a magnet armature head with relative smaller hatred is formed * which is resiliently connected to the magnet anchor body larger hatred. This resilient connection can be designed in such a way that it can only be used in one or more load directions but is effective in several load directions. For the latter, the magnet armature head can be connected to the magnet armature body so that it can move freely and resiliently, for example via an under tension and Print an elastic, ombable intermediate layer «wipe Magnetic armature head can be reached can.

D 'r Hagnetankerkörper "u3 no separate anchor body e''iu _s but can be formed directly by a magnetiech asu influencing machine part of any Fora the right" it a "spring Hagnetankerkopf

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can be connected.

Invention agemäö trained magnet anchors This is advantageous in many areas of application, including for electrical control devices on knitting machines in which the armatures of electromagnets, in particular electro-holding magnets, with adjusting elements relatively large Ilasse connected and material pollution are exposed. The Yeretellglieder can by utilizing the inventive idea there as Boljeen formed or connected to a Bolsen, which against spring force in the direction of a holding magnet is adjustable and «with a spring loaded« -

fixed anchor head that comes to rest against the holding magnet. Tests have confirmed the extraordinary effectiveness and shock resistance of magnet armatures designed according to the invention. * '.

Details of the invention are evident from the following description in conjunction with the drawing, Magnetic armature formed on the exemplary embodiments according to the invention more or more schematically !! shown are

In detail »own:

- 5th

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1 shows a schematic representation of a device according to the invention trained magnet armature

2 shows a section through a first practical embodiment of a magnet armature according to the invention;

FIG. 3 shows a section through a second practical embodiment of a magnet armature according to the invention;

a partial section through a flat knitting machine with an inventively designed Mögtietanker according to Figure 2;

Pig 5 is a flat representation of a partial step along the line Y - V in Pig. 4

The schematic representation of FIG. 1 explains the principle underlying the invention of dividing a magnet armature into a magnet armature head 10 with a small mass Di ₁ and an armature body 11 with a larger residual mass m ₂ , and magnet armature head 10 and armature armature 11 with a spring 12 together au connect. On the anchor head 10, the Ankerfläohe 101 is formed, which comes to rest against the pole shoes 13 uad 14 or against the core of an electric magnet.

- 6

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BATH ORIGINAL

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In the practical execution form shown in Fig.a, the armature body is old of the larger one. Mass IB _{2 is formed} by a bolt 11t which is adjustable in the direction of the double arrow 15 and which has a piston 16 at its magnet-side end which is made of specifically light plastic material. Consentrically sub piston 16 is a cylinder 1? arranged, which has an inwardly directed edge 171 at its one end, which engages behind a shoulder 161 of the "S. Ibens 16 and thus forms a stop of the cylinder against this piston. The hollow shaft 102 of an armature plate 110 is inserted into the free opening of the cylinder 17, which corresponds to the Hagaetankerkopf 10 of FIG. A compression spring 112 is arranged within the cylinder 17 and the shaft 102 of the magnetic plate 110, which is supported on the one hand on the solenoid 16 and on the other hand on the back side of the magnetic plate 110.

P In the embodiment shown in Fig. 2 des

The magnet armature is the resilient connection formed by means of the compression spring 112 between the bolts 111

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The larger Hasse g and the armature plate 110 old the smaller Hasse m ^ from the rest position only effective when the bolt is moved in the direction of the electromagnet t8 of the bolt 111 can be pivoted to a limited extent, so that a flush contact of the contact surface 101 of the magnetic plate 110 against the follower shoes of the electromagnet 18 when the magnet armature is applied is ensured. This design can be produced with precise spacing and suspension tolerances and offers good security against impacts, which are primarily exerted on the bolt in the direction of the electric magnet 18.

In the case of the practical embodiment according to FIG. 2, in the embodiment shown in FIG. This compound we j means of an elastic (JummikörperB 212 bevnrkt.v the eir-e so called. Constitutes rubber spring and is on the one hand fixedly connected by gluing or vulcanization to the magnet armature head 210 and on the other hand to the armature body 211. The rubber body 212 can be uowaft! On? A * g as well as pressure loading This A · Μ5 filling form provides a shock protection against impacts

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BAD QRfGlNAL

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in every direction. The plate-shaped and in attachment The magnet armature head reaching the pole shoes of the electromagnet 18 can initially be connected to the rubber body 212 be connected to a prefabricated part, which is subsequently connected to a magnet armature body 211, which can have any shape. With this type of execution, certain length tolerances of the . The entire system must be taken into account in the mechanical adjustment of the magnet armature.

In FIGS. 4 and 5, magnetic pulleys of the embodiment according to FIG. 2 are shown schematically in connection with holding magnets which are installed in the machine slide of a flat knitting machine for a Nada! Selection control. Such a machine structure is shown and described in German Offenlegungsschrift 2 002 991.8. In the two figures, only one toilet of the needle bed 19 of the flat knitting machine is shown, in which cam strips 20 are attached. ßind. In the machine slide guided in a known manner over the needle bed 19, of which only part of the mounting plate 21, a guide plate 22 and the lock plate 23 is shown, several electromagnets © 18 are arranged in the mounting plate, two of which are shown .

The magnates 18 are provided with magnet armatures, ie ©

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correspond to the Ausführungsforra according to Figure 2, so a bolssenförraigen armature body 111 and a Have magnet armature plate 110 resiliently arranged for this purpose with a relatively small Hasse. The bolts 111 are at its end opposite the magnet 18 a sliding shoe * 24, and by one on the Bolts 111 arranged compression spring 25 are the BoI-zsti with the sliding shoes 24 held in contact with the cam lists 20 when the magnet 18 is not excited Cam strip 20 causes the magnet armature to be continuously offered to the magnet 18 with the armature plate in contact 110 against the pole pieces of the magnets. In the present case, the magnet system consists of a Permanent magnet with soft iron foil shoes that pass through a coil in the sense of the permanent magnetic field electrical excitation are amplified and weakened by a controllable opposing field so that the fills anchors under spring force. Bumps that here mainly from the armature body 111 in the direction can be done on the electromagnet 18 because of the resilient arrangement of the magnet armature plate do not cause the magnet armature to fall off.

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BAD OBiGlNAL

Claims (2)

P 1673 - 10 - Patent claims Magnetic armature for magnet arrangements under shock load »characterized in that the surface (101) of the Hague tanker, which comes into contact with a magnet core or against the pole pieces (13, 14) of a magnet, is attached to a magnet armature head (10) with a relatively small mass (O ₁ ) is formed, which is resiliently connected to the armature body (11) of greater mass («ig). 2. Magnet armature according to claim 1, characterized in that the magnet armature head (10) is resiliently connected to the magnet armature body (11) in a freely movable manner is. Magnetic armature according to Claim 2, characterized in that the magnetic armature head (armature plate 210) with the armature body (bolt 211) via a lower Tensile and compressive elastically deformable intermediate layer (rubber body 212) is firmly connected. (Fig. 3) 4 magnet armature according to claim 1, characterized 30982A / 066A V 1673 - 11 - net that the magnet body (111) is cylindrical formed and at its magnet-side end with sinem made of a specifically light material, for example Plastic, manufactured piston (16) is provided, which is inserted into a magnet armature cDpf (110) comprehensive cylinder (17) protrudes, its longitudinal displacement in both directions Stop against the piston (16) is limited, and that between the piston (16) and the armature head (110) connected to the cylinder (17) a Compression spring (112) is arranged. (Fig. 2). 5- Magnate & nke? according to one of claims 1 to 4 for electric holding magnets on knitting machines, the armatures of which are connected to adjusting members of a relatively large mass, characterized in that the adjusting member is designed as a bolt (111) which is connected to a Boisen, which counteracts the force of the force (3? eder 25) is mounted so that it is adjustable in the direction of the holding magnet®? * (18) and is provided with a spring-loaded fastening (110) that comes to rest against the holding magnet. (Pig. 4 and 5). 309824/0664 BATH ORIGINAL