SU777096A1 - Apparatus for producing three-dimensional textile articles - Google Patents

Description

one

The invention relates to process equipment for the manufacture of bulk textiles used as a reinforcing material for plastic structures.

A device for manufacturing volumetric textiles in the form of rotation bodies is known, comprising a mandrel in the form of a rotating body mounted rotatably and means for winding yarns on the lateral surface of the mandrel. The laying of the filaments along the radius is carried out with the help of the preformed elements 1.

The disadvantage of this device is that the installation capacity is poor, caused by the need for complex preliminary preparation of the radial elements, and this unit also produces products with rigid (previously impregnated with a binder) radial elements, which reduces the quality of the finished product. .

The closest in technical essence and the achieved result is a 25 device comprising a mandrel in the form of a body of rotation, mounted rotatably around a horizontal axis, and means for winding threads on the side surface of the mandrel, laying 30

no filaments along the forming mandrel with the needle spreader and forgiving the formed layers of filaments along the radius of the mandrel 2.

The stitching of the layers with radial threads is carried out using a piercing device on which a mandrel with wound layers is installed. The specified forgiveness device contains a piercing needle and a forgiving needle. The piercing needle, being lowered down, forms holes in the layers of threads wound on the mandrel and in the mandrel itself. A needle with a radial thread, which is caught by an edge thread on the inner side of the mandrel, is lowered into the puncture hole.

The disadvantage of this device is the low quality of the material obtained, which is explained by the fact that the radial thread laying assembly, which contains piercing and forgiving needles, in the process of work destroys the structure of the web on the mandrel.

A disadvantage is also the fact that there is no possibility of multiple use of the mandrel, since the structure does not provide for the removal of the product. The removal of the mandrel is carried out as a result of heat treatment (burning).

The purpose of the present invention is to improve the quality of the product, as well as increase the efficiency of the device by re-using the mandrel.

This goal is achieved by the fact that the mandrel has radial grooves on the side surface for accommodating radial threads, radial stepped blind channels along each of Them, and thin-walled tubes freely placed in them with an outer diameter corresponding to the diameter of the upper channel step, and each tube has a through longitudinal a groove, with the height of the radial groove being greater than the height of the upper step of the channel and less than the total height of the channel, and the means for flashing the layers of filaments along the radius of the mandrel has guides mounted parallel to the generator mandrel. mounted on it with the ability to move along the mandrel radius and pitch equal to the pitch of its holes, hooks, the stem of each of which has protrusions for contacting with the lower end surface of the corresponding tube and axial groove in the area of the protrusions, A yarn spreader for laying the threads along the generatrix is mounted on the threading means for stitching.

FIG. 1 shows a general view of the device; in fig. 2 is an isometric view of the device; in fig. 3 - mandrel; in fig. 4 - section of the mandrel and about the radial groove; in fig. 5 is a schematic drawing of a radial thread.

A device for manufacturing volumetric textiles comprises a mandrel 1 in the form of a rotating body, having a lateral surface radial nickname 2 for accommodating radial threads 3, radial stepped blind channels 4 along each of them and thin-walled tubes 5 freely placed in them with a through longitudinal groove 6 , means for stitching layers of yarns along the radius of the mandrel, which contains a guide 7 with mounted on it with the possibility of moving along the radius of the mandrel and with a step equal to the pitch of its holes, hook and 8, the rod 9 each of which has projections for koitaktirovani with the lower end surface sootvetstvuyui s tube and the axial groove 10 in the area of the projections. A thread stacker 11 with a slider 12 is mounted on the thread stitching means.

A mandrel of a ustaowlep device based on 13 and connected to the actuator 14.

The device also has a means for winding yarns consisting of a spool 15 with pegs 16 on which the packings 17 are mounted. The threads 18 pass through the grouping rollers 19, tension 20, the guides 21 and fall onto the mandrel 1.

A.Preparation of the device to work. Packs 17 with filaments are pegged 16 spools 15. The threads pass through the grouping rollers 19, nat 20 and

the guide rollers 12 and are fixed between the tubes 5 on the mandrel 1. The fastening of the nty to the mandrel is carried out as follows. Two adjacent threads, which must be located, for example,

between the first and second, second and third rows of tubes arranged around the circumference of the mandrel are interconnected by a knot and placed behind the tubes of the second row. Similar to the first and second

the filaments are connected and fixed to the tubules of even rows, all the other round filaments. If the number of rows of tubules is even, then the last or first three strands are tied into one knot. A thread

18, the packages are tucked into the hole of the horizontal spreading machine 11 and are attached to any edge tube.

B. Winding products. After fixing the threads 18 and the threads 3 on the mandrel 1 begin

rotate the mandrel according to the arrow, the threads 18 are wound around the pipe between the tubes 5. Simultaneously with the winding of the threads 18, the spreader 11 is laid between the tubes along the mandrel

and 3, which bends around the outer tubes on the mandrel alternately on one and the other side. The process of winding the circumferential filaments with the simultaneous arrangement of the filaments along the generatrix of the mandrel is repeated until the article has a specified profile.

B. Break in radial threads. After wrapping and unfolding the two systems of threads, they make their way through the third system of threads perpendicular to the two previous systems.

The penetration of the radial threads is carried out as follows. A long weaving hook is fastened in the groove 2, onto which the thread 22 is hooked, and, pulling out the hook, lay the thread 22 into the groove 2. The hook 8

dipped into the tube 5 until the end of the blind hole 4, while the hook head passes under the drink 22. The hook 8 is rotated 90 ° and lifted upwards.

When the hook moves up, he locks the thread 22, and nodvizimnyh (due to the axial groove 10) petals hook on the tube 5 and all at the same time (thread 22 and tube 5) pulls between the laid 18 and 3. From the rod remove the tube 5 (for which it is provided with a longitudinal groove) and unhook the thread 22 from the hook 8, while at the same time putting the loop of thread 22 onto the next tube 5. After removing the tube and thread, the core with the hook is lowered into the next tube and the process of gripping and pulling the radial thread is repeated until radially laid e thread through all tubular arbor.

After all radial threads have been laid, the product is removed from the mandrel.

Claims (3)

1. An apparatus for manufacturing volumetric textiles containing a mandrel in the form of a body of rotation mounted rotatably around a horizontal axis, and means for winding yarns on the lateral surface of the mandrel, laying the yarns along the generator of the mandrel with a thread stacker and flashing the formed layers of filaments along the mandrel radius , characterized in that, in order to improve the quality of the products, the mandrel has on its lateral surface radial grooves for accommodating radial threads located along each of them p staggered blind channels and thin-walled tubes freely placed in them with an outer diameter corresponding to the diameter of the upper step of the channel, the groove height being greater than the height of the upper step of the channel and less than the total height of the channel, and the means for flashing the layers along the mandrel radius has a guide installed parallel to the forming mandrel with mounted on it with the ability to move along the radius of the mandrel and with a step equal to the pitch of its holes, hooks, the stem of each of which has tabs for contact tirovanie with the lower end surface of the corresponding tube and axial groove in the area of the projections. 2. A device according to claim 1, characterized in that the stock from the mandrel tubes has a through longitudinal groove. 3. An apparatus according to claim 1, characterized in that the thread folding means for laying the threads along the forming agent is mounted on the guide means for stitching the threads. Information sources, taken into account in the examination 1. US patent number 3955502, cl. 139-11, 1976. 2. US patent number 4059468, class. 156-93, 1977 (irotype). 18 Fig.Z FIG. four