SU1382888A1 - Arrangement for applying finishing composition onto textile web - Google Patents

Description

i The invention relates to textile finishing equipment, and, to devices for economically applying finishing solutions to a textile fabric using an engraved shaft.

The purpose of the invention is to improve the quality of processing the web by eliminating the annular irregularity of the p | distribution of the solution in engraving.

1 shows an engraving, a view of the surface of the shaft along the normal to the axis of the shaft; figure 2 is a section in figure 1; on fig.Z - section bb in figure 2.

The device contains a pair of shafts (e shown), one of which has an elastic coating and is a doctor blade, and the other has an engraving (|) ig.1-3), made in the form of pyramidal recesses 1 on the surface 2 of the shaft.

Neighboring in the circumferential direction (kg. And 2) the depressions I and 3 of the engraving are connected to each other by a groove 4, passing through the diagonals of the straight line. The base bases of these pyramids are near lubes 1 and 3. The width b of the groove 41 on the surface 2 of the shaft is 01.5-0.8 the length of the groove 1 (the distance between the recesses 1 and 3 to the slot of the groove 4). The groove 4 is shaped to | pin, i.e. tapers from surface 2; shaft deep into. The depth h of the groove 4 is 0.5-0.8 of the depth H of the pyramidal recesses 1.

The application of the treatment solution to the coagulable material by means of an engraving is carried out as follows.

Moving in a liquid, a shaft engraving perceives this liquid as its recesses 1 and grooves 4, and surface 2, to prepare for a meeting with the fabric to be processed, engraving is replicated, i.e. the liquid is removed, leaving a necessary amount of it. The engraving is offered with an elastic coated shaft (soft rubber). Cal puts pressure on the engraving perpendicular to the image plane (Fig. 1) and rolls along the engraving in the circumferential direction. At the same time, the doctor blade rubber is pressed into the recesses 1, but it cannot create pressure there, because the liquid from the recess 1) flows into the adjacent recesses 3 of the groove 4. The depth h of the groove 4 is chosen such that the doctor blade rubber does not overlap. it is conducive to the fact that the groove 4 of the wedge, and the rubber of the doctor blade, is not capable of receiving an acute-angled form, can in no way fill the groove in the area of its point O (fig. 3). The width b of the groove is chosen so that the pyramidal depressions adjacent to each other in the axial direction (Fig. 3) do not connect, which will inevitably cause fluid leaks along the axial direction.

Thus, in the process of roller development, hydraulic pressure in the engraving does not receive sharp drops and there is no release of liquid from the engraving after the doctor blade. Therefore, uneven distribution in the engraving does not take place and is ring-shaped.

The specific parameters of the width b and the depth h of the groove 4 were tested experimentally with specific values of the working parameters of the machine.

Operations are required to obtain an engraving. After the knurled shaft surface passes, the shaft surface is rolled with a pointed disk with the same axial feed. The surface of the shaft is simultaneously rolled by a second disk, which is separated from the first one in the axial direction by a multiple of an odd number of axial feed halves. The rolling of a sharp disk over the surface of a knurled shaft causes the appearance on the surface of the pressed wedge-shaped groove without the bend of the partitions between the recesses 1 (Fig. 1). If the disc is aligned with the diagonal of the base of one of the grooves 1 and the shaft starts to rotate with the disk attached to it, shear the disk in the axial direction with the same feed from which the pyramidal grooves were rolled, the disk will push the groove through all the diagonals of the bases of the grooves located on one of two parallel screw lines. In order to simultaneously form a groove and on the second parallel helix, the shaft surface is simultaneously rolled by a second disk, an amount apart from the first in the axial direction. . a multiple of an odd number of halves of the axial feed, with the second disk bu-; children forming a groove distant

from the first to a distance equal to half of the axial feed is the condition of hitting the second helix.

Thus, both grooves are simultaneously formed and, as a result of the passage by the disks, the engraving takes the form shown in Figures 1-3.

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Example. The gravel is made with a distance between equally spaced (rapport) recesses in the axial direction of the shaft t 1-, 25 mm. Dp such prints H 0.5 mm, 1 0.11 mm (Fig.1-3). After the groove of the copper jacket of the shaft, the surface of the obtained cylinder is rolled by knurling with axial feed

1.25 mm / rev. As a result of this operation, the deepening of the desired pyramidal configuration is formed - the exact imprint of the knurling. But the recesses are placed along two helix lines with a distance between these lines.

0.625 mn (i.e. -2-). Further, the shaft surface is rolled by two successive pointed disks, the distance between the sharp edges of which is 13.125 mm. The resulting engraving is suitable for use in machines designed to process light and medium weight fabrics.

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Claims (4)

1. DEVICE FOR APPLYING FINISHING · SOLUTION ON A TEXTILE CANVAS, containing a pair of shafts, one of which carries an elastic coating, and the other is an engraving made in the form of pyramidal recesses on the surface of the shaft, which differs in that, in order to improve the quality of processing of the canvas by eliminating the annular unevenness of the distribution of the solution in the engraving, every two adjacent in the circumferential direction depressions of the engraving are connected to each other by a groove passing through the diagonals of the pyramid bases of these depressions. 2. The device according to claim 1, characterized in that the width of each groove is 0.5-0.8 of its length. 3. The device according to π.1, characterized in that each groove in the cross section has a wedge shape. 4. The device according to claim 1, about l and - with the fact that the depth of each groove is 0.5-0.8 the depth of the pyramidal recess. Nem finishing equipment of a purely ntyvanny shaft. The purpose of the invention is to improve the quality of processing of the canvas by arranging