RU1775515C - Weft layer for loom - Google Patents

Abstract

SUMMARY OF THE INVENTION: As a device for laying a weft yarn, a linear motor with a core in the form of a rolling body having polarized regions is used. 2 silt.

Description

The invention relates to a fabrication technique.

Devices are known for moving electric rolling stock (wagons) on high-speed railways, on which a linear electric motor stator is placed along the rail tracks, and rotors are placed on the wagons.

It is known to use an asynchronous linear motor for shuttle driving on metal looms.

The aim of the invention is the use of a linear motor with a core in the form of a rolling body having polarized regions as a device for laying weft yarns on weaving machines, mainly multi-yarns with wavy yawning.

In FIG. 1 schematically shows in longitudinal section a portion of a stator of a linear electric motor located in the zone of formation of wave-shaped movable pharynx, and rotors - shims rolling along the stator; in FIG. 2 - the same horizontal section.

The stator 1 has evenly spaced pole elements 3 arranged along the path of the rotor-spacer 2, the electric windings of which 4 receive power from a special source of electric pulses or. at

the simplest devices, from a three-phase AC network.

The rotor-spacer (Fig. 2) consists of two disks 5 and 6, with polarized regions along the cylindrical rolling surface. The disks are movably connected by means of an axial square element 7 with the possibility of mutual axial movement. Coil 8 is freely located coaxially with the disks in the middle, containing a weft thread 9 in the winding thereon with a margin of one or more shims. In order to ensure a suitable tension of the weft thread and to compensate for the difference in linear speeds on the rim of the rotor disks and on the bobbin, the cheeks of the bobbin are pressed against the rotor disks with constant axial force provided by the spring 10.

The advantage of this solution is the absence of an initial impact, the uniform and synchronous movement of several rotor-spacers along the stator, as well as the ability to control the spacers during the formation of complex weaves of weft and warp threads due to the organization of reciprocal, step-by-step movement of individual spacers during feeding stator elements with current pulses of a certain duration and polarity.

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Joint venture

Claims (1)

SUMMARY OF THE INVENTION The use of a linear motor with a core in the form of a rolling body having polarized regions as a device for laying a weft thread and on a weaving machine. F ig. 1 FIG. 2 8 10 / Wnneeeefci II II If