SU15196A1 - Multicolor Printing Machine - Google Patents

Description

The invention relates to conventional single color printing machines for one rental, in which the ink matrix is located on a cooled drum and the printed material is pre-soaked with an ink solvent.

In the proposed machine, the use of pressure rollers moving with their bearings in the radial slots of the frame, the intensity of the pressure being regulated by the handwheels mounted on the frame and the screw, it is assumed to press the printed material to the colorful matrix, and to protect the latter from contamination during the passage of paint through coils with gasket; the machine is equipped with a bath and a dryer with rollers designed to impregnate the material with a solvent for paint and dry it after printing is completed.

The drawing is a side view of the machine.

The machine consists of devices for moistening, printing and drying the material. The printed material 1, screwed onto the shaft 2, under the influence of tension with some braking, passes through the straightening plate 3 and enters the wetting apparatus, consisting of rollers 4, 5 and b, sheathed with some kind of hygroscopic fabric and in contact with each other under

by pressing the handwheel 7 through the spring on their bearings, which can move in the vertical cuts of the frame 8. The lower roller is immersed in a bath 9 filled with solvent and, wetting it while rotating, transfers moisture to the other rollers and material. Sometimes, if necessary, the entire wetting is turned off: the apparatus then the material (cloth) is wetted and pressed in advance, and wound in the usual way already wet on the shaft 2; With close contact of their layers, the fabric can keep moisture for a long time. In this case, such fabric will be guided for printing not over the rollers, but over them. The material moistened in one way or another, by bending the pressure roller 18, falls onto a horizontally positioned metal printing shaft 10, on the circumference of which a colorful form 11 is located in a layer of uniform thickness. on a flat ribbon, which the shaft 10 is then wrapped around. This shaft has a through internal cavity 12 along its entire length, into which through a hollow middle spike 13, fitted with a greynical cord, and through hollow spokes 14propos aets cooling liquid izch

-pipes 15 equipped with a thermometer 16 e. with a fan 17 to regulate the temperature of the liquid. The printed material bends around most of the surface of the cylinder 10 and presses four or more shafts 18, 19, 20 and 21 against it. To avoid strong clamping of the shafts, which would have occurred if they were provided only with pressure springs, for precise adjustment and sameness at all times of the printing of the force: of this pressing, the corresponding adaptation is made, consisting in the following. Next: the shafts of the shafts 18, 19, 20 and 21 are placed in bearings; I move the cix in radial slots 22, 23, 24 and 25 to the center of the shaft 10; these bearings are supported by springs adjustable by handwheels 26, 27, 28 and 29 on: eccentric sectors 30 and 31 (the remaining two are not visible in the drawing), which belong to wheel 32, which can rotate around the spike of the main printing shaft, on which the eccentric new cam 33 sits. The wheels 32 are located on both sides of the shaft 10 and are connected to of their turns by bolts 34 moving in cuts 35. A cam 33 for each turn the main shaft; it also makes one turn and presses on the lever 36, which rotates the snoring; Vic 37, while turning the ratchet gear 38 to the desired angle. This latter is tightly connected to the cage 39, which rotates the worm gear 40, which in turn transmits rotational movement through gears 41 and 42 to wheel 32, to which gear 42 is also tightly connected. Spread of the STb lever and, consequently, the magnitude of rotation of gear 38 adjusts screw 43 by spring 44. After the material has a fairly intensive environment stitching and going out from under the last pressure roller 21, it enters the dryer 45, a downstream chamber with several rollers 46, 47, 48, 49 and 50, through which it flows over, and during its passage through it dries current heated air entering the lower opening 51 and leaving the upper 52. The material can be pushed onto the rollers; it is done as usual through the side doors, but the heated air can pass under the influence of natural or artificial draft with appropriate temperature and quantitative adjustment. After drying, the printed material is already screwed onto the shaft 53 in the form of 54. In case the fabric is printed, in order to avoid marani when the paint passes through it, it passes under the pressure rolls, together with the substrate, unwound from the reel 55 and wound onto the reel 56 .

The entire machine is driven by a drive 57, associated with pulleys 58 and 59, seated on the main shaft of the cylinder 10 and on the shaft 53. This drive has a friction transmission from a transmission or motor, allowing the speed of the main shaft to be adjusted, and therefore clamping mechanism and shaft 53, screwing up the finished material.

The subject of the patent.

1. A single-color multi-color printing machine in which the ink matrix is located on a cooled drum and the printed material is pre-soaked with ink solvent, characterized in that pressure rollers 18, 19, 20 and 21 are used to press the printed material onto the ink matrix. whose necks are placed in bearings moving in radial cuts 22-25 and supported by springs adjustable by handwheels 26-29, on eccentric sectors 30-31 on wheels 32, which are driven in rotation and means of cam 33, lever 36, the ratchet engagement 37,38 and 39,40 worm gear, pinion 41 associated with the gear wheel 42 on the wheel 32 than at the screw 43 serves for controlling the arm 36 oscillation.

2. In the machine specified in paragraph 1, the use of coils 55 and 56 with a gasket to protect the printed material from soiling when the ink passes through is pushed.

3. With the machine specified in paragraph 1, use the bath 9 with the roller 6 and the rollers 4 and 5 for impregnating the printed material with a solvent for paint.

4. With the machine specified in step 1, use the dryer 45 with several rollers 46-50 for pulling the printed material.