DE2364680A1 - Device for manipulating an end of yarn - by clamping, imparting a mechanical impulse, shearing or altering its run by tension or pressure - Google Patents

Abstract

A device for the high speed manipulation of an end of yarn, e.g. in weaving, uses the phenomenon that an electrical impulse in a flat spirally wound coil, induces in a thin metal disc positioned close to it, a relatively powerful accelerative force of short duration away from it. The thin metal dics is embodied in a component of a clamp, shear, etc. to be moved at high speed from the inactive to the active position by the "magnetic pressure", and according to requirements it may be held in the active position by an electromagnet energised simultaneously.

Description

The invention relates to a device for Treatment of yarn,

"Treatment" in the context of the invention is to be understood as the implementation of actions such as clamping or the giving of mechanical impulses to the yarn, as in cutting and when pulling out of their path for a short time or printing a piece of yarn,

Mostly the yarn speeds are and with it , the production speeds in looms and others Yarn processing machines rely heavily on the Speed depends on what the above actions are can be carried out.

According to the invention, acts of the here considered type can be carried out much faster than up to now by means of a device which is characterized by this is that the effective part is the same according to the principle "Magnetic pressure" cooperates with an electrical coil .

As is known, the principle of "magnetic pressure" In short, the following is that if a coil wound, for example, into a flat spiral, is placed at a short distance from a metallic disk and sends a surge of current through the coil, v-jirbeistrorne in of the metal disk, which result in a short-term, relatively large. trained by the coil Bsschlsutiiaunssifrafΐ.

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BAD ORIGfNAL

The application of this principle in the device according to the invention therefore means that the effective part of the device contains a material disc suitable for inducing eddy currents, which is a short distance from the electrical coil, so that when a current pulse is supplied to the coil, for example by means of a _{the control unit 3} belonging to a weaving machine or other textile machine, the active part with the associated disk is moved away from the bobbin with a relatively large acceleration force tgir-d.

For various acts, this could be short-term Acceleration force is sufficient to let the effective part carry out the desired action. So this could effective part in a cutting device form the moving knife, which because of the short-term acceleration force the desired cutting movement versus a stationary one Hesser can perform.

Likewise, the effective part could be a finger or be a needle, which or which counteracts a restoring force acting on it under the influence of the short-term Accelerating force can perform a fast movement around to give a movement impulse to a thread ..

In the case of actions such as clamping, it is not only important that the effective part, in this case a movable clamping jaw, is quickly brought into the closed position., but thereafter also during a certain sit in the closed position remains. Therefore, the device according to the invention is used Performing actions of this kind still with a cold function must be provided.

A practical implementation of the invention For this purpose, the device is characterized in that the active part also has an electromagnetic coil cooperates, which when excited the effective part in

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BATH ORIGINAL

3 236A680

keeps its operative position.

According to the invention, therefore, \ xr.c! Precisely working yarn slabs, yarn winding devices and such devices are obtained which make a major contribution to the endeavor to increase the product speed of text machines.:; . Can, like the weaving speed of weaving machines.

The invention is detailed below in the drawing explained with an exemplary embodiment. "soft" on a Twine clamp refer x.

^{The "Gax v} nkioKffie" shown in section in the drawing has a fixed and a movable clamping jaw 1 b ^ n. I. The fixed clamping jaw 1 is by means of a G _{: urnrp} attached to the frame loom, aufzumontiereridon Gahcuses U.

The movable jaw 2 is at one end, -a-a

preferably made of light material; such as aluminum> made lever 5, which is hinged at its other end to the housing ji . The 'joint ^{vex v} bir.dung v; ird is formed by a leaf spring 7, which. a "., is slightly pretensioned and z-was such that the spring tries to turn the lever" to the right, as seen in the drawing. _... ".

With 8 a preferably in -GestaJLt a flat Spirale.gewickelte electrical coil is indicated, which is received in a, preferential price made of plastic ßrückstück S, which bridge piece runs over the housing § and is attached to it. The lever 6 -verläuft below the Erückenstückes ϊ and contains at the location of the coil 8, a disc 10, for example from Aluisini -.- u "i vraiche suitable"? T to it by sending a Stroipatosser dui-ch through the coil S . induce vortex currents au. In the open position of the Garrklenvme shown in the drawing, a piece of furniture 5 with the washer 10 is bundled by the pretensioned spring 7 sr "di" coil S,

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The lever 6 carries a second one on the underside

Disc or a block 11, consisting of ferroraagnetiscueis Material and working with the anchor 13 pines im Housing 4 assembled electromagnet 12.

The thread clamp described works as follows:

A current surge applied to coil 8 results in that on the disc 10 a large, downwardly directed Accelerating force is exerted, which the lever 5 very can be moved quickly into the closed position. If only: at the same time. the control of the coil 8 of the electromagnet 12 is energized, the lever 6 is thereon during the energization time of the electromagnetic magnet thereby held in its closed position, darjs the ferromagnetic disk 11 from the electromagnet armature 13 is attracted.

It is easy to see that, for example, a cutting device working on the same principle , in which the lever 6 would be regarded as the moving knife and the fixed jaw 1 as the fixed cutter, would be without the electromagnet 12 and the ferromagnetic disk 11 on the underside of the lever 6, since in this case the brief movement of the movable knife would be sufficient to carry out the desired cutting effect.

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BATH ORIGINAL

Claims (1)

^A NSPRÜ CHE Λ Provide a device for treating yarns
with a between an effective and an ineffective lap: ^f i
movable part, characterized in that this part
according to the principle of "magnetic pressure" with a
electric coil cooperates. 2 * Device according to claim 1, characterized_geked> that the moveable part is the moveable jaw of a yarn clamp or yarn brake forms. 3. Apparatus according to claim 2 _S characterized ge ^ ennzeicbnet ^ that's the movable part also with an electromagnet coil
susaiiiHieri works, which is set up for arousal to keep the movable part in its operative position. 4. Apparatus according to claim 1, characterized gelcennzeir.hnet _s that the movable part forms the movable cutter of a cutting device. . 5. Device according to claim 1, characterized in that that the movable part is a traversing finger or a traversing needle forms. 5 09829/0328 -. BATH ORIGINAL L e r s e i t e