US2217133A - Machine for the multicolor printing of textile fabrics - Google Patents

Description

Oct. 8, 1940. E. OVERLACK MACHINE FOR THE MULTICOLOR PRINTING OF TEXTILE FABRICS Filed May 16, 1939 3 Sheets-Sheet 1 In Van for M q mzwmw U U Q QM m m\ n a I q (N $1 *QN \\\\XA\ AltorneyJ.

Oct. 8, 1940. OVERLACK 2,217,133 7 MACHINE FOR THE MULTICOLOR PRINTING OF TEXTILE FABRICS Filed May 16. 1939 3 Sheets-Sheet 2 All U Alt ar'neyvs.

E. ovERLAcK Oct. 8, 1940.

MACHINE FOR THE MULTICOLOR Pamwme OF TEXTILE FABRICS Filed May 16, 1959 3 Sheets-Sheet 3 (ll-Illllulllllllllllllll'lllllllllll'llllllvllll 'lu llllilllvlll A Home ys Patented Oct. 8, 1940 UNITED STATES MACHINE FOR THE MULTICOLOR, PRINTDJG OF TEXTILE FABRICS Emil Overlack, Anrath, near Crefeld, Germany,

assignor to the firm Overlack & (30., Kom-' manditgesellschaft Ovack-Patente,

Germany Crefeld,

Application May 16, 1939, Serial No. 274,015 In Germany March 16, 1938 3 Claims.

This invention relates to a machine for the multicolor printing of textile fabrics in continuous web by means of a rotating stencil cylinder in leaving a possibility of drying between the individual printing points.

The main feature of the invention consists in that by omitting the endless conveyor band usual in film printing machines and aflixing the web to be printed to its carrier cloth by spaced transverse stripes of the adhesive an intermediate drying is rendered possible between the individual printing points'by the action of heat preferably applied from underneath, so that the film printing can be carried out in several colours on the continuous web.

Another feature of the invention consists in the special construction of the drying arrangements and in their equipment for allowing the outflow of moist air.

Other details of the invention are hereinafter described with reference to the accompanying drawings which illustrate an embodiment of the invention by way of example, and in which Fig. l is a diagrammatic view showing the general arrangement of the machine,

Fig. 2 is a diagrammatic view partly in elevation and partly in section, showing the spreading device for the carrier cloth,

Fig. 3 is an end view of the spreading cylinder,

Fig. 4 shows a portion of the needle band in top plan view,

Fig. 5 is a diagrammatic view showing the carrier cloth attached to the needle band,

Fig. 6 shows diagrammatically a film printing of the fabric to be printed. The carrier cloth is v a fabric permeable to' air. A pasting device 5 is arranged prior to the point where the carrier cloth 2 joins a needle band 4 circulating as an endless band. This pasting device 5 comprises a paste container, a roller taking up the paste from the container and a roller taking off the paste from the paste roller and delivering it to the carrier cloth. The pasting is efiected in transverse stripes on the carries cloth in that the roller applying the paste has on its periphery longitudinal ribs which are not specially illustrated, as the pasting process is clear without this. During the pasting operation the carrier cloth runs over the cylinder l4. The cylinder l4 5 is divided in the middle and carries bars II. The outer ends ll of these bars II project beyond the periphery of the cylinder. The bars II are axially shiftable. They are guided by external stationary sloping faces l2 and also by 10 stationary sloping faces l3 in the middle division. The result of this arrangement is, that during the rotation of the cylinder I4, the bars in moving from the upper side are shifted outwards and on coming into contact with the carrier cloth, stretch this cloth. The stretching takes place during the pasting operation. On leaving the cylinder M the carrier cloth runs between the cylinders 6 and 1 and at the same time is brought into contact with the needle band 4. This needle hand is guided by guides 9. The projecting needles are designated by Hi. When the carrier cloth has run out of the nip between the cylinders 6 and 'l with the needle band 4, the cloth and band pass between the cylinders l5, where they are joined by the fabric to be printed. In this manner the fabric to be printed is united with the carrier cloth. After this union the fabric, cloth and band pass between the cylinders l6 and IT. The upper cylinder I6 is constructed as film printing cylinder. Its wall is formed by a template l8 which for this purpose is fixed on the end screws 20 of the printing cylinder by means of clamping screws I 9. Clips 8 are also laid around the ends of the stencils. The stencils are soldered or cemented together over their entire width, that is in axial direction. If a pattern should come on a solder seam, the stencil is worked at the point in question. This working is effected by a system of hammer 40.

needles. A hollow axle 2| is arranged in the film printing cylinder and communicates with an ink feeding container under compressed air. The ink enters the cylinder through passages 23.

The ink distributor is designated by 24. It is reciprocated by undulated guides 25. The ink distributor is suspended and acted upon by springs 38, which tend to press it against the point of application. A pull cable 3'! enables the pressure to be regulated as desired. The

counter cylinder I! has a rubber coating.

Following each film printing cylinder there is a drying device 26. Part of this drying device is located below the fabric to be fed. This part consists of alternating chambers 21 and 28. The

chambers 21 are purely heating chambers, that is no airfor drying passes out therefrom, whereas drying air is blown from the chambers 28 through perforations against the fabric. The direction of movement in the system of heating chambers is indicated by the arrows 29. The air is fed through the passage 30 which is connected in a suitable manner to an apparatus delivering drying air. The part of the drying arrangement located above the fabric web consists of a pinrality of tubes 3! from which drying air flows against the upper surface of the fabric to be printed. The tubes 3| are so arranged that one tube II is opposite one chamber 21. By raising the U per part of the drying arrangement by means of a handle lithe inflowing drying air is automatically shut off from the upper and lower parts of the drying arrangement. For this purpose the connection pipe 4l extends into a casing 42 and is oscillatable in the same about its longitudinal axis. A feed conduit 43 from the drying air and also a conduit 44 leading to the chambers 28 communicate with the casing 42. Slots 45 are provided in the end of pipe 4| and corresponding slots 46 in the walls of the bores for receiving the conduits 43 and 44. If the upper part of the drying arrangement is swung upwards, the pipe 4| turns so that the slots 45 assume the position shown in Fig. 11 and consequently the passage for the drying air is shut oil. The conduit 44 is connected to the passage 30. Theconnecting pipe 4| leads to the tubes 3|. If the upper part of the drying device is returned into operative position, the drying air again flows out from both parts of the drying arrangement at the same time. The conduits forming the upper part of the drying arrangement further may be equipped for the discharge of moist air. For this purpose an adjustable nozzle 40 injecting water mist into the air feed conduit 39 may be provided, and fed with water through a flexible hose not shown on the drawings.

The film printing cylinders and their counter cylinders are driven by a common shaft 32. The counter cylinders l1 and the film printing cylinders l6 can be adjusted to accurate register by the adjusting devices 33.

when the fabric to be printed has run through all ink applying points and left the last drying point, the carrier cloth and needle band are separated, the one from the other. This is effected in a simple manner in that the needle band continues to circulate along its endless path, whereas the carrier cloth is conducted to a winding point 34. At the same time the printed fabric is conducted to the winding point and thereby separated from the carrier cloth.

I claim:

1. A machine for the multicolor printing of textile fabrics in continuous web, comprising in combination with a plurality of printing points each consisting of a rotary stencil printing cylinder and of a counter pressure cylinder, hot air drying arrangements arranged between and alternating with said printing points, endless needle bands circulating successively through all of said printing points and said drying arrangement, a carrier band fed through the machine and stretched by said needle bands, and means for sticking the continuous web to be printed to said carrier band in spaced transverse stripes.

2. In a machine as specified in claim 1, each drying arrangement comprising a system of chambers located under the path of the web to be printed and adapted to heat and to discharge hot air, and conduits for discharging hot air arranged opposite the heating chambers.

3. In a machine as specified in claim 1, each drying arrangement comprising a system of chambers located under the path of the web to be printed and adapted to heat and to discharge hot air, and 'to allow the discharging of moist air and conduits for discharging hot air arranged opposite the heating chambers.

EMlL OVERLACK.

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