Device for humidifying cylinder in rotary offset machine

 

(57) Abstract:

Usage: in printing machines. The inventive object of the invention is a device for dampening cylinders in rotary offset machine containing ploskostnye nozzle aimed at the cylinder and installed next to each other in the axial direction, and a throttling washers installed between the nozzle and the cylinder, the distinctive feature of which is that ploskostnye nozzle is installed in the housing, and a throttling washers installed on facing toward the cylinder side of the housing, and each of them are made of top and bottom sheets, each throttling washer angle spray is equipped with a profile. 15 C. p. F.-ly, 12 ill.

The invention relates to printing machines, in particular to a device for humidifying cylinder in rotary offset machine.

A device for moistening cylinder in rotary offset machine containing ploskostnye nozzle aimed at the cylinder and installed next to each other along the axis, and a throttling washers installed between the nozzle and the cylinder [1]

A disadvantage of the known device is that Sonae distribution of moisture immediately affects the printed image, in particular sealed the paint surface. If a 1.0 per unit area is defined as a constant factor of the ideal distribution of the paint over the entire surface has been known to vary between 0.6 and 1.5, depending on the location of the corresponding point in the zone of the elongated middle axis of the nozzle or in the zones located on both sides at an angle of about 70aboutrelative to the Central axis of the nozzle and intersecting with the area adjacent the nozzle.

A further disadvantage of the known device is that the nozzle may be partially or completely clogged formed by the cylinder colorful mist or paper dust, which can lead to failure of the nozzles or reduce the effectiveness of their work.

The aim of the invention is a device for humidifying cylinder in rotary offset machine containing installed next to each other along the axis ploskostnye nozzle, which mainly provides uniform application of hydrating fluid per unit area, even in areas in which overlap zone of the spray nozzles.

The goal is achieved in the proposed device for humidifying cylinder in rotary offset machine containing plasmascreen the existing washer, installed between the nozzle and the cylinder, due to the fact that ploskostnye nozzle installed in the housing, and a throttling washers installed on facing toward the cylinder side of the housing, and each of them are made of top and bottom sheets, each throttling washer angle spray is equipped with a profile.

The proposed device, it is expedient provides direct spraying of cylinder using plasmatronic nozzles mainly with a constant factor of the liquid distribution unit according to the width of the cylinder along its axis. Thanks to the profile made in the throttling disk constant moisturizing liquid is uniformly distributed on the unit area and thereby achieve uniform wetting of the areas of the cylinder, in which the overlap zone spray plasmatronic nozzles. Thus, achieve consistent quality of the printed image and when changing the printing speed. Install throttling disk is ensured not only a uniform distribution of hydrating fluid, but also the selection of the jet of sprayed liquid smooth for a jet of high energy, able to penetrate through the air shell during the operation of the I clogged nozzles colorful mist or paper dust, thanks to that caused by clogged failure nozzles are excluded.

Those nozzles that are temporarily not required, you can override valves, for example, if you work on only part of the width of the cylinder.

Even if the nozzle is partially clogged (Fig. 12), and in this case, due to the throttling of the washers, the effect is better than without throttling washers.

In Fig. 1 shows the proposed device, the cross-section of Fig.2 one throttling washer, partial front view of Fig.3 another throttling washer, provided with a profile, a partial front view of Fig.4 the third throttling washer, provided with a profile, a partial front view of Fig.5 fourth throttling washer, provided with a profile, a partial front view of Fig. 6 fifth throttling washer, provided with a profile, a partial front view of Fig. 7 distribution scheme moisturizer multiple nozzles; Fig.8 the proposed device according to the second form of execution of Fig.9 the proposed device according to a third form of execution of Fig. 10 detail to Fig.8 and 9, Fig.11 jet sprays, given ploskostiam nozzle; Fig.12 jet spray liquid in the case of a partial for the designs below. In case 3, is made with a U-shaped cross-section, the holders 4, 5 attached fixture with 6 ploskostyami nozzles. Case 3 can be fixed to a not shown in the drawing frame offset machine. Fixtures 6 are placed next to each other in the axial direction, and for the entire width of the printing, there are eight devices 6. The latter is supplied with input 7 for connection to the electrical control and line 8 for supplying moistening fluid. In addition, the device 6 includes a nozzle 9, through the open side of the housing 3 of the giver stream 10, which is aimed at the surface of the cylinder 2. Between the nozzles 9 and the surface of the cylinder 2 is installed in a throttling of the washer 11, is arranged to open and close in the direction of arrow x, with each throttling washer consists of two sheets 12, 13, configured to drive the actuator 14, 15. The actuator 14, 15 may be made in the form of hydraulic, pneumatic or electric actuator. Executive engine 14, 15 may be connected to the actuating means made in the form not shown in the drawing gears interacting with the rack, close the th.

Case 3 is supplied by a line 16 for supplying compressed air, for example 1,1-1,5 bar. Jet 10 hits the sheets 12, 13, which, depending on the desired amount of water is more or less open and as smoothed jet hits the surface of the rotating cylinder 2. The share of moisturizer, which is given by the sheets 12, 13 inside the housing 3, through the production of 18 is fed back into the circuit moisturizer. Issue 18 is placed in the deepest part of the hull 3. The liquid can be discharged due to the fact that the housing 3 is installed inclined, as shown in Fig.1, or the bottom of the case 3 can be installed with the necessary flow moisturizer inclination.

In addition, the housing 3 provided with a valve 19 that is installed with the possibility of reciprocating movement in the direction of arrow x, by means of which the nozzle 9 can be overridden if they are not used, in order to protect them from contamination. In each case overlap the pair of nozzles 9 depending on the desired width of the printing. Valve 19 mounted on the rail 20, and it can be moved either manually, or by using the actuator. If it is moving with the engine on the motor shaft in a known manner can betheny forms of execution throttling washers 11 with different profiles, made of sheets 12, 13, and every two nozzle 9 is installed at a distance And from each other, and the sheets 12, 13 are installed to control the direction of the arrow X. Fig.2 shows a washer with a smooth profile 21. Fig.3 shows segmental profile 22. In Fig.4 presents the profile 23, the ascending and descending on the model of the ladder, and Fig. 5 three-cornered profile 24. Profiles can be made with a smooth, uniform or irregular shape, and in this context, the smooth form meant solid Pismennaya form, and under the uniform shape of the periodically varying the notches made in the sheet throttling washers. Bad form means the profile with different grooves. Segmental profile 22 can be made with grooves in the form of semicircles.

The letter b is marked width of the relief, the letter l is the length of the profile and the letter with the minimum width of the profile.

In Fig.4 shows the overlapping coverage area of the nozzles 9.

In that case, if a portion of the width of the cylinder, for example a quarter of its width, is used, the nozzle 9 pairwise overlap the flaps 19 to protect them from pollution.

The proposed device for the. the UYa 10 spray moisturizer, aimed at cylinder 2. Stream 10 is smoothed by the sheets 12, 13 mounted with the ability to regulate their position in the direction of arrow x depending on the desired amount of water. Stream 10 is evenly distributed in accordance with the profiles 21 and 24, resulting moisturizer out of the sheets 12, 13 as smooth and evenly distributed streams 17 and enters the cylinder 2. When the jet hit 10 sheets 12, 13 part moisturizer is removed and recycled through the circuit moisturizing fluid, including through the release of 18 and line 8. Increased pressure through line 16 for compressed air, prevents the penetration of colorful mist or paper dust into the housing 3 so that the nozzle 9 is not clogged. For the same reason, to prevent clogging of the nozzle 9 overlap with the valve 19 when not in use, for example, when working with only 3/4 of the width of the cylinder 2.

In Fig.6 shows a partial front view of a profile according to the fifth form of implementation. The feature of this throttling washers is that the sheet 12 is equipped with three-cornered profile 25 and is mounted for movement in the direction of arrow x, and listname and in this case, the profile could be made with segmental or ascending and descending on the model of a stair profile.

Fig. 7 shows the distribution scheme moisturizer for several areas of the nozzles 9, set at a distance And from each other.

The diagram in the upper part of Fig.7 shows a graph of an ideal uniform distribution of the liquid by a factor of 1. This curve has the shape of a straight line 26. Curve 27 shows the distribution of fluid nerazglashennoy jet 10 obtained without sheets 12, 13 (Fig.1). It is clear that in the case of several plasmatronic nozzles 9 next to each other in the fields and crossing areas of the nozzles 9 is achieved by the factor distribution of fluid, equal to 1.5, while in the middle of the zone , in the region of Central axis 28 of the nozzle 9, the factor distribution of fluid equal to 0.6. In contrast, the curve 29 shows the factor distribution of the liquid, obtained by the use of sheets 12, 13. This factor is basically equal to 1, with minor fluctuations, i.e., it represents the ideal factor distribution of the liquid.

In Fig.8 shows a side view of a further form of execution of the proposed device 1 according to Fig.1, but without the housing 3. Device 6 containing plasmotroane nozzle 9, is installed can be rotated at an angle relative to the horizontal axis 30. Thus the top 12 and bottom 13 sheets regulirovaniya in the direction of arrow x by means of the actuator 14, and the bottom sheet is installed without the ability to move.

Fig. 9 shows a top view of a third form of the device 1 according to Fig.1, without the housing 3. Device 6 containing the nozzle 9, is set to rotate at an angle to the vertical line 31. The sheets 12, 13, which are also shown at the top, mounted for movement in the direction of arrow X.

In Fig.10 shows a detail of Fig.8 and 9. In contrast to Fig.1 in Fig.8 and 9, the nozzle 9 is installed can be rotated by using a ball joint, made of bead 32 and the spherical bearing 33. Line 8 provided with an extension in the form of a truncated cone located directly behind its passage through the liner 33 in order to ensure the supply nozzle 9 a sufficient amount of moisturizer when it turns in the direction of arrow z1and z2. United with the ball 32 of the nozzle 9 can be fixed using the installed in the threaded hole 35 of the liner 33 of the adjusting screw 36. Movement of the nozzle 9 in the direction of arrow z1and z2can be combined so that the nozzle 9 can be rotated in three dimensions, i.e., and the angles of rotation and according to Fig.9 can be combined.

In Fig.11 and 12 presents izobrazhenniy.

1. DEVICE FOR HUMIDIFYING CYLINDER IN ROTARY OFFSET MACHINE containing ploskostnye nozzle aimed at the cylinder and installed next to each other in the axial direction, and a throttling washers installed between the nozzle and the cylinder, characterized in that ploskostnye nozzle installed in the housing, and a throttling washers installed on facing toward the cylinder side of the housing, and each of them are made of top and bottom sheets, each throttling washer angle spray is equipped with a profile.

2. The device under item 1, characterized in that the profile of the holes of each washer has a rectangular shape, the shape of the periodically varying grooves or curly form.

3. The device according to PP. 1 and 2, characterized in that at least one sheet made with reversed in the direction of the other sheet hollows having segmental profile, ascending and descending speed profile, a triangular profile or a profile in the form of a semicircle.

4. The device according to p. 1 to 3, characterized in that it has a control means, supplied with actuating motors, United with leaves.

5. The device according to PP. 1 to 4, characterized in that the Professor who eat that profile has a width, component 0,05 0,15 distance between nozzles.

7. The device according to PP. 1 6, otlichayushiesya the fact that the profile has a minimum continuous width, component of 0.01 to 0.1 of the distance between the nozzles.

8. The device according to PP. 1 to 7, characterized in that one sheet is set stationary and the other can move.

9. The device according to PP. 1 to 8, characterized in that the profile is made in the sheet that is installed with the ability to move.

10. The device according to PP. 1 to 9, characterized in that a nozzle with ball joint installed with the possibility of rotation about the horizontal and vertical angle regulation 0 45o.

11. The device according to PP. 1 to 10, characterized in that a nozzle with ball joint installed with the possibility of rotation about the vertical to the horizontal angle regulation 0 45o.

12. The device according to PP. 1, 10 and 11, characterized in that the nozzle is installed with adjustable angle resulting from a combination of horizontal and vertical angles of the regulation.

13. The device according to PP. 1 to 12, characterized in that the enclosure is equipped with a line for feeding compressed air.

15. The device according to PP. 1 to 14, characterized in that it contains flap for overlapping pairs of nozzles.

16. The device according to PP. 1 to 15, characterized in that the spray angle of the nozzles 40 150o.

 

Same patents:

FIELD: ecology.

SUBSTANCE: invention is related to technology of reduction of contamination of contours with water mediums by microorganisms. Method and device aimed at reduction of contamination of contours with water mediums by microorganisms includes stage of electrochemical processing of water medium, besides mentioned contour represents contour of moistening substance, moreover, specified electrochemical treatment is carried out by application of voltage to at least two electrodes, besides mentioned voltage is AC voltage with range from 5 to 50 Volt.

EFFECT: makes it possible to reduce number of microorganisms with the available contamination, and also to prevent their growth.

24 cl, 2 dwg

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