SU482320A1 - Machine for manufacturing magnetic cores - Google Patents

Description

The invention relates to the production of reinforced plastics and to the technique of making nonwoven materials from transversely arranged layers of filaments (for example, glass sheets, impregnated with synthetic materials, in particular phenol formaldehyde resins), intended for further processing into structural products.

The prior art devices have a reciprocating moving stacker that places the weft yarns into the shed between the warp threads and the rotating mandrel on which the binder is dried (cured) and the nonwoven canvas is bonded. The weft yarns are stacked on the fingers periodically moving along the edges of the backbone of the chains.

Production of material on such installations is inefficient and time consuming, since at the same time one weft thread is laid.

In addition, the impregnation of the yarns before laying does not allow a metered amount of binder to be applied to the material and creates known difficulties in terms of equipment cleanliness and safety.

The installation has a stacking device equipped with two stackers of weft yarns and two parallel continuously synchronously moving traction bodies, successively passing through a heat chamber, an impregnating device and a drying chamber, which makes it possible to obtain a nonwoven material with a transverse layer arrangement in a continuous process.

FIG. 1 and 2 schematically depict the proposed plant for the manufacture of nonwoven web material.

The installation consists of spools 1 for the package of yarns 2 of the base, spools 3 for dl

weft yarns 4, the laying device 5 with two stackers 6 and 7 weft yarns, spinnerets 8 warp threads and two paired continuously synchronously moving pulling bodies 9 with hook needles 10.

As a traction body, a two-row bottom sleeve-roller chain can be used, one row of which serves to transmit movement and the second to fasten needle-hooks 10.

A heat chamber 11 with heaters 12 is installed behind the laying device. Guides for continuous traction organs are laid through the heat chamber. At the outlet of the heat chamber, a pair of driven vacuum impregnators 14 is installed consisting of a tank 15 for a binder and a metering tank 16.

Behind the impregnating device there is an existing chamber 17, on which an injection fan with heaters 18 and a suction fan 19 is mounted. Disks 20 and guide rollers 21 are installed at the outlet of the drying chamber of the chamber.

Winding-cutting device 22 contains cutting guillotine shears 23, t needing rollers 24 and winding roller 25.

The installation works as follows.

The weft yarns 4 with the spuds 3 are threaded onto the stackers 6 and 7, and during the reciprocating movement of the latter, they are thrown onto the hooks of 10 continuous pulling bodies 9. The warp threads from the spools 1 through the dies 8 are threaded between the stackers 6 and 7. Initially 2 are attached to the weft threads 4, and with further work they are drawn by the drive rollers 13.

The glass beads are stacked in a bag: the weft - the base - the weft, and on the needle-hooks 10 in a tight state they are passed through the heat chamber 11, the impregnating device 14 and the suschestvennuy chamber 17.

In stacker b, 2-100 weft yarns are loaded, depending on the density of the material obtained, and in stacker 7, fewer yarns are used to keep the material from delamination in the drying chamber when it is bent.

In heat chamber 11, the stacked yarns are heated to remove moisture and part of the lubricant, if necessary.

- The heated filaments enter the impregnating device 14, where they are covered with a uniform dosed layer of binder from the metering tank 16. The impregnated bag is carried away by chains into the existing chamber 17, and, bending asterisks, is filled with hot air coming from the - blower fan through air heaters 18. A suction fan 19 of greater capacity creates a constant vacuum in the existing chamber 17.

A bonded material leaves the core chamber, moving on chains to the disks 20, which pushes it from the needle-hooks 10, after which the traction bodies idle return to the laying device 5, and the finished material is fed to the pull rollers 21 24. On the way, the edges of the material are cut to size across the width. Further, the material wraps around the winding roller 25 and is wound into a roll. When the roll is ready, the material is cut with guillotine shears 23.

Subject invention

An apparatus for producing a nonwoven web material consisting of a stacking device, a heat chamber, an impregnating device, an existent chamber, and a winding-cutting device, characterized in

that, in order to increase the quality of the material and reduce the labor intensity of production, the laying device is equipped with two weft yarns and two parallel, continuously synchronously moving traction

by bodies successively passing through the heat chamber, the impregnating device and the existent chamber.

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