CN101934630B - Single-plate bicolor split separated inking device and printing equipment with same - Google Patents

Abstract

The invention provides a single-page, two-color, color-separated inking device and a printing device using the inking device. The single-page, two-color, color-separated inking device has two sets of inking mechanisms, and each set of inking mechanisms at least includes an ink fountain, an ink fountain roller, an ink transfer roller, an ink distribution roller, and an inking roller connected to each other. It is characterized in that the The single-page two-color color-separated inking device also includes a color-separated ink roller, and the color-separated ink roller has a roller shaft, and more than one color-separated ink roller is arranged at intervals along the axial direction of the roller shaft. , each of the color-separated ink rollers is connected to the color-isolated ink rollers of the two sets of inking mechanisms, and is connected to at least one backing roller, and the color-separated ink rollers can transfer two kinds of ink to the The form roller is described, and the form roller is in contact with the letterpress cylinder. The invention has the advantages of saving production cost, high production efficiency, can individually adjust the ink discharge amount of one color, and can complete the overprinting of one version with two colors separated from each other and one version with one color in one printing.

Description

A single-page, two-color, color-separated ink feeding device and printing equipment having the device

technical field

The invention relates to a printing ink supply device, in particular to a single-page, two-color, color-separated ink supply device, and a printing device using the ink supply device.

Background technique

In order to realize a printing unit, the color separation printing of two colors can be completed through one printing. The currently known devices are shown in Fig. It is a schematic diagram of the positional relationship between the string ink roller, the swing ink feed roller, the ink fountain, the ink fountain roller, and the partition shown in Figure 1. The 1-version 2-color inking device mainly includes: ink fountain 14, separator 141, ink fountain roller 15, swinging inking roller 16, string ink rollers 17, 18, and its technical features are:

As shown in Figures 1 and 2, in this known ink delivery device, the ink fountain 14 of an ink storage is divided into several ink storage spaces 142 that cannot communicate with each other along the axial direction with a partition 141, and the inks of two different colors Spacers are placed in the ink storage space 142. During the rotation of the ink fountain roller 15 , the two color inks in the ink fountain 14 are coated on the ink fountain roller 15 to form interval stripes. The pendulum roller 16 swings between the ink fountain roller 15 and the ink fountain roller 17 to transfer the ink on the ink fountain roller 15 to the ink fountain roller 17 . The ink is evenly distributed by the ink distribution roller 13, and then the ink of the two colors is transferred to the form roller 12 by the second ink transfer roller 18, and the ink is transferred to the letterpress cylinder 11 by the form roller 12.

Wherein, the inking rollers 17 and 18 in the inking device move back and forth along the axial direction to beat the ink evenly. In order to prevent the inks of two different colors from mixing colors, grooves 171 are arranged on the rollers 17 and 18. The width of the grooves 171 corresponds to the width of the divider arranged in the ink fountain. Grooves cut between.

There are following defects in this known 1 version 2 color color-blocking inking device:

1. The key metal processing parts cannot be used universally, and the product conversion process is complicated and the cycle is long. In order to prevent the inks of two different colors from mixing colors, the ink fountain roller 15, the ink knife 143, and the string ink rollers 17, 18 all need to cut grooves between the two inks. If change product, two kinds of ink segmentation positions need to change, will change ink fountain roller 15, ink knife 143, string ink roller 17,18. Since the ink fountain roller 15, the ink knife 143, and the ink rollers 17 and 18 are all metal processing parts with high processing and assembly precision requirements, the processing technology is complicated and the processing time is long, so the product conversion time is long and the conversion process is complicated. At the same time, It also increases the manufacturing cost of the product.

2. The two inks are easy to mix colors. The separator 141 is prone to abrasion or mechanical damage during use, causing the ink storage spaces of the ink fountain 14 to communicate with each other and the ink to mix.

3. It is inconvenient to add ink. After the ink fountain 14 was divided into several small ink storage tanks, it brought great inconvenience to the work of adding two kinds of different color inks.

4. It is difficult to adjust the ink discharge amount of one color ink alone. Because two kinds of color inks are placed in the ink fountain 4, adjusting the ink discharge amount of one of them will affect the ink discharge amount of another color ink.

China's No. 02209489.X utility model patent, the disclosed "number color interval printing code machine" promptly adopts a structure similar to the above-mentioned ink delivery device, and has the same defect.

In addition, as shown in Figure 3, the known 2-version letterpress printing machines are all 2-version 2-color letterpress printing machines, and their technical characteristics are:

Each plate cylinder is supplied with ink by a separate ink fountain and a separate ink path; one printing can complete two-color overprinting. This 2-version 2-color letterpress printing machine has the following problems:

1. If the printed product needs to add color, for example, one of the printing plate cylinders needs to print 1 plate and 2 colors of color separation printing, the ink supply system of the plate cylinder must be modified.

2. When carrying out 1-version 2-color color separation printing, there is the same technical problem as the above-mentioned known 1-version 2-color color separation ink delivery device.

In addition, in the Chinese utility model patent No. 200420072787.4, a "relief printing unit" is also disclosed. The relief printing unit includes an impression cylinder and a relief cylinder. The mold roller corresponds to the inking device of one color, and the ink of different colors is transferred to the relief cylinder through the color mold roller in the form of regional ink transfer. The relief cylinder cooperates with the impression cylinder to complete a multi-color printing of one plate. The printing unit is a two-way ink supply structure, and the letterpress printing unit has the following problems:

1. When the relief printing plate on the letterpress cylinder is a printing plate with high hardness, such as a metal plate, the surface of the color mold roller must use an elastic material with low hardness, such as rubber. When performing 1-version 2-color color separation printing, the position accuracy of the color separation will inevitably be affected by the deformation of the edge profile of the elastic material. When two colors need to meet, the deformation of the edge profile of this elastic material will cause color mixing where the two colors meet.

2. Since the principle of this letterpress printing unit is that the inking device of one color corresponds to one color mold roller, that is, there is only one color mold roller for the relief printing plate on the letterpress cylinder to transfer one color, so it cannot meet the requirement Printing quality such as ink color uniformity, ink plumpness, etc. have higher requirements for products.

Contents of the invention

The purpose of the present invention is to provide a printing ink supply device, especially a two-way ink supply, and a plurality of color-separated ink rollers arranged on the color-separated ink roller respectively undertake two-way ink. An inking device, and a printing device using the inking device.

The single-page, two-color, color-separated inking device proposed by the present invention has two groups of inking mechanisms, and each group of inking mechanisms at least includes interconnected ink fountains, ink fountain rollers, ink transfer rollers, ink distribution rollers, and ink string rollers. The single-page two-color color-separated inking device also includes a color-separated ink roller, and the color-separated ink roller has a roller shaft, and more than one color-separated ink roller is arranged at intervals along the axial direction of the roller shaft. , each of the color-separated ink rollers is connected to the color-isolated ink rollers of the two sets of inking mechanisms, and is connected to at least one backing roller, and the color-separated ink rollers can transfer two kinds of ink to the The form roller is described, and the form roller is in contact with the letterpress cylinder.

The present invention also provides a printing device, which has the above-mentioned single-page, two-color, color-separated ink feeding device.

Compared with the known technology, the single-plate, two-color, color-separated inking device of the present invention has the following characteristics and advantages:

Double ink fountain structure is adopted, each ink fountain stores ink of one color, and ink of each color is transported by a separate ink delivery mechanism through dual ink channels. That is, the two-way ink supply transports the two inks to the first color-separated ink distribution roller and the second color-separated ink distribution roller. On the first color spacer ink distribution roller and the second color spacer ink distribution roller, a plurality of raised first elastic roller surfaces and second elastic roller surfaces capable of transferring ink are formed at certain intervals and predetermined distances. The first elastic roller surface and the second elastic roller surface are respectively corresponding to each color-separated ink roller set on the color-separated string ink roller, and the inks of different colors from the two ink paths are respectively placed on the color-separated string ink rollers. The first ink transfer roller surface and the second ink transfer roller surface on both sides of the groove of the roller wheel. Through the movement of the color-separated ink rollers in the axial direction, the color-separated ink rollers are driven to reciprocate in the axial direction, so that the two colors of inks are connected on the surface of the plate roller, which avoids the problems existing in the known technology. Color mixing defects.

If the product needs to be changed and the separation position of the two inks needs to be changed, it is only necessary to loosen the axial position fixing screw of the color separation ink roller wheel, so that the color separation ink roller wheel can be moved to a new position along the axis and fixed, and replaced with the same The ink distribution roller corresponding to the position of the repositioned color separation ink roller wheel is sufficient. Therefore, when the product is changed, it is only necessary to move the color-separated inking roller along the axial direction without replacing the ink fountain roller, ink knife, and inking roller, which saves production costs, and the position conversion of the color-separated inking roller is fast and convenient. The production efficiency is greatly improved, thereby improving the printing output and overprint quality of the printing machine. Since the inks of two different colors are transported by different ink fountains and ink paths respectively, defects such as color mixing, inconvenient adding ink, and inability to individually adjust the amount of ink of one color existing in the known technology are avoided.

In the printing machine with the single-plate two-color color-separate ink-feeding device of the present invention, a plate cylinder adopts the single-plate two-color color-separate ink-feed device, and one printing can complete the overprinting of one plate with two colors and one color with one color.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in,

Fig. 1 is a schematic diagram of a known single-page, two-color, color-isolated inking device;

Figure 2 is a schematic side view of Figure 1;

Fig. 3 is a schematic diagram of known 2-version 2-color letterpress printing equipment;

Fig. 4 is the schematic diagram of the single-page two-color color-separated ink delivery device of the present invention;

Fig. 5 is a schematic side view of Fig. 4;

Fig. 6 is a schematic diagram of a printing device with a single-page, two-color, color-separated inking device of the present invention;

Fig. 7 is a schematic diagram showing the effect of printed images and texts produced by the single-page, two-color, color-separated inking device of the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

Fig. 4 is a schematic diagram of the single-page, two-color, color-separated inking device of the present invention; Fig. 5 is a schematic side view of Fig. 4 . As shown in Fig. 4 and Fig. 5, a single-page, two-color, color-separated inking device proposed by the present invention has two groups of inking mechanisms A and B, and each group of inking mechanisms at least includes an ink fountain 21 and an ink fountain roller 22 connected to each other. , The ink transfer roller 23, the ink distribution roller 25', the ink roller 24 in series. The single-version two-color color-separated inking device also includes a color-separated ink roller 26, and the color-separated ink roller 26 has a roller shaft 261. More than one color-separated inking roller wheel 262, each of the color-separated inking roller wheels 262 is connected with the color-separated ink distribution roller 25 of two groups of inking mechanisms respectively, and is connected with at least one backing roller 12, said The color separation roller 262 can transfer the two inks to the form roller 12 , and the form roller 12 is in contact with the relief cylinder 11 . As shown in Figures 4 and 5, in this embodiment, the color-separated ink-distributing rollers of the two sets of inking mechanisms A and B connected to the color-separated inking rollers 262 are respectively defined as the first color-separated ink-distributing rollers. An ink roller 251 and a second color separation ink distribution roller 252. Wherein, in the process of transferring the ink from the ink fountain 21, 21' to the first and second color-separated ink distribution rollers 251, 252 in the inking device, a multi-stage ink distribution roller 24 and an ink distribution roller can be set. 25', and the setting method and position of the series ink roller 24 and the ink distribution roller 25' are the same as those of the known technology, and it is possible to carry out a series of ink distribution and ink distribution according to the properties of the ink transmission, printing requirements, etc., or to perform multiple series of ink distribution, ink distribution, etc. After distributing the ink, the ink is passed to the color-separated ink-distributing rollers 251, 252, and then to the color-separated string ink rollers 26. See also Fig. 4, wherein in a group of inking mechanism B, just be provided with two string ink rollers 24,24 ', also be respectively provided with ink distribution roller 25 ' between two string ink rollers 24,24 ', the ink After passing through the ink rollers 24 and 24 ′ twice, it is passed to the color-separated ink distribution roller 252 .

The present invention is further provided with an annular groove 2621 at the middle part of the roller surface of each color-separating ink roller wheel 262, and this groove 2621 divides the roller surface of the color-isolated ink roller wheel 262 into the first ink transfer roller surface 2623 and the first ink transfer roller surface 2623. The second ink transfer roller surface 2622 . The first color spacer ink distribution roller 251 connected to the color spacer ink distribution roller wheel 262 in the first group of inking mechanism A is provided with a raised part that can limit the ink transfer area of the first color spacer ink distribution roller 251. The first elastic roller surface 2511, the second color spacer ink distribution roller 252 connected with the color spacer ink roller wheel 262 in the second group of inking mechanism B is provided with a protruding second color spacer roller 252 that can define the second color spacer roller. The second elastic roller surface 2522 in the ink transfer area of the ink roller 252 . The first elastic roller surface 2511 and the second elastic roller surface 2522 are arranged correspondingly to the first ink transfer roller surface 2623 and the second ink transfer roller surface 2622 of the color separation roller wheel 262 respectively, so that The inks of the two groups of inking mechanisms A and B are respectively transferred to the first and second ink transfer roller surfaces 2623 and 2622 on both sides of the groove 2621 of the color-separated ink roller, through which the color-isolated ink roller 262 The axial movement of the two kinds of inks is transmitted to the form roller 12, and the effect of two different color inks being juxtaposed and in contact with each other is produced on the form roller 12. The form roller 12 is in contact with the relief cylinder 11, and the ink is transmitted onto the relief cylinder 11.

Wherein, the first elastic roller surface 2511 and the second elastic roller surface 2522 are both made of elastic material, such as rubber, with a hardness of 15-85 degrees Shore (Hs). The width of the first elastic roller surface 2511 and the width of the first ink transfer roller surface 2623 may be equal or different. And the first elastic roller surface 2511 is only in contact with the first ink transfer roller surface 2623 , not with the second ink transfer roller surface 2622 . The width of the second elastic roller surface 2522 can be equal to or not equal to the width of the second ink transfer roller surface 2622, and the second elastic roller surface 2522 is only in contact with the second ink transfer roller surface 2622, not with the second ink transfer roller surface 2622. The first ink transfer roller surface 2623 contacts. Thereby guaranteeing that two kinds of inks are accurately transferred to the ink roller wheel 262 of the color-separating string.

In this embodiment, as shown in Figures 5 and 7, the width of the first elastic roller surface 2511 is set as L1, and the width of the second elastic roller surface 2522 is set as L2; The distance between ink roller wheels 262 is N; The widths of the ink roller surface 2623 and the second ink transfer roller surface 2622 are respectively C1 and C2; and the width of the printed image and text of one color after printing is X1, and the width of the printed image and text of the other color is X2, then the width between the roller surfaces It should satisfy: X1<L1<N+C1-D, X2<L2<N+C2-D, in short, and the sum of the widths of the first and second elastic roller surfaces 2511, 2522 is greater than the width X of the printed image .

As shown in FIG. 5 , the color spacer roller wheel 262 is detachably fixed on the roller shaft 261 and axially positioned by a fixing device. Described fixing device is fixing screw 263 and/or positioning key (not shown in the figure), but is not limited to this, can adopt any known detachable fixing device, as long as can be reliably fixed on the ink roller wheel 262 of spacer color On the roller shaft 261, it is enough to disassemble or adjust the position of the ink roller wheel for the color-separating string when needed. For example, the positioning key can adopt a commonly used key connection structure, such as a flat key, a spline, etc., as long as the accurate positioning of the ink roller 262 on the roller shaft 261 can be guaranteed, and the color-isolated string can be fixed by the set screw 263. The ink roller wheel 262 is fixed at a specified position to achieve the purpose of accurate ink transmission.

The color separation roller 26 can move axially, so the color separation roller wheel 262 can also reciprocate along with the roller shaft in the axial direction, so that the two inks are connected.

Fig. 6 is a schematic diagram of a printing device with a single-plate, two-color, color-separated inking device according to the present invention. As shown in the figure, the substrate is transferred along the rotation direction of the cylinders by the mutual rotation of the cylinders, and the color-separated letterpress printing and overprinting are completed in sequence. Specifically, the substrate (such as paper) is conveyed to the impression cylinder 3 through the paper feeding cylinder 1 and the paper transfer cylinder 2, and the mutual rotation and embossing of the impression cylinder 3 and the relief cylinder 11 completes the isolation of the substrate. Color relief printing, and then embossed by the mutual rotation of the impression cylinder 3 and another relief cylinder 4, to complete the overprinting of the substrate. Finally, the printed matter that has been sequentially completed with color-separated letterpress printing and overprinting is delivered to the stacker 7 on the impression cylinder 3 and the paper output cylinder 6 .

The working principle of the present invention is: the ink of one color is stored in the ink fountain 21 of each group of ink delivery mechanism A, B, and the ink of each color is conveyed by independent ink delivery mechanism A, B, namely two-way ink supply, will The two inks respectively stored in the ink fountains 21, 21' are transported to the first color separation ink distribution roller 251, The second color separation roller 252 . The first color separation ink distribution roller 251 and the second color separation ink distribution roller 252 do not need the roller surface of the ink transfer to be cut off, and then form a plurality of protruding first ink transfer rollers at a predetermined distance along the axial direction. The elastic roller surface 2511 and the second elastic roller surface 2522 . The first elastic roller surface 2511 and the second elastic roller surface 2522 correspond to each of the color-separated ink roller wheels 262 provided on the color-separated ink roller 26 respectively, and transfer the inks of different colors from the two ink paths respectively. To the first ink transfer roller surface 2623 and the second ink transfer roller surface 2622 of the groove 2621 both sides of the color-separating ink roller wheel 262. The color spacer ink roller 26 moves in the axial direction, and the color spacer roller wheel 262 is driven to reciprocate in the axial direction, and the two inks are transferred to the form roller 12, and two inks are formed on the form roller 12. The effect that two kinds of inks of different colors are juxtaposed and in contact with each other, the form roller 12 is in contact with the relief cylinder 11, and the ink is transferred to the relief cylinder 11.

If the product needs to be changed and the split position of the two inks needs to be changed, it is only necessary to loosen the axial position fixing screw 263 of the color-separating ink roller wheel 262 to move the color-isolated ink roller wheel 262 to a new position along the roller shaft 261 for fixing , and replace the ink distribution rollers 251, 252 corresponding to the position of the repositioned color-separation roller wheel 262. Therefore, when the product is converted, it is only necessary to move the color-separated ink roller wheel 262 axially without replacing the ink fountain roller 22, the ink knife, and the ink rollers 24, 24'. Therefore, the position of the color-isolated ink roller wheel 262 is converted fast and convenient. In addition, when the color spacer roller 262 is worn out, or the width of the first elastic roller surface 2511 and the second elastic roller surface 2522 needs to be changed, it is only necessary to remove the color spacer roller 262 in the axial direction. , replace with a new roller. The structure of the invention greatly saves the production cost, improves the production efficiency, and thus increases the printing output of the printing machine.

The above descriptions are only illustrative specific implementations of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. The utility model provides a single version double-colored separation inking unit, has two sets of inking mechanisms, and every group inking mechanism includes interconnect's ink fountain, ink fountain roller, distributor roller, even ink roller, ink vibrator, its characterized in that, single version double-colored separation inking unit is still including separation color ink vibrator, separation color ink vibrator has a roller, follows the axial interval of roller is provided with more than one separation color ink vibrator, each separation color ink vibrator is connected with the even ink roller of separation color of two sets of inking mechanisms to at least one leans on the version roller, separation color ink vibrator can transmit two kinds of printing ink extremely lean on the version roller, lean on the version roller to contact with relief cylinder.

2. The single-plate bicolor separating and inking unit according to claim 1, wherein each of the separating and inking rollers has a ring groove in the middle of its surface, the ring groove dividing the surface of the separating and inking roller into a first ink-delivering surface and a second ink-delivering surface; in the first group inking mechanism with be equipped with the first elastic roller face that bellied first color separation even ink roller ink transfer region can be injectd on the first color separation even ink roller that color separation ink distributing roller wheel is connected, in the second group inking mechanism with be equipped with the second elastic roller face that bellied second color separation even ink roller ink transfer region can be injectd on the second color separation even ink roller that color separation ink distributing roller wheel is connected, first elastic roller face and second elastic roller face respectively with the first ink roller face that passes of color separation ink distributing roller wheel and the corresponding setting of second ink roller face that passes to can correspond the transmission respectively with the printing ink that comes from two sets of inking mechanisms extremely on the first, the second ink roller face that pass of the slot both sides of color separation ink distributing roller.

3. The single-plate bicolor separation inking unit of claim 2, wherein the widths of the first and second resilient roller surfaces and the widths of the first and second inker surfaces satisfy the following conditions: l1 is less than N + C1-D, L2 is less than N + C2-D;

wherein: l1 is the width of the first elastic roller surface, L2 is the width of the second elastic roller surface, N is the distance between two adjacent color separation ink distributing rollers, C1 is the width of the first ink transfer roller surface, C2 is the width of the second ink transfer roller surface, and D is the width of the groove;

and the sum of the widths of the first elastic roller surface and the second elastic roller surface is greater than the width of the printing image-text.

4. The single-plate bichromal separating inking unit of claim 2, wherein the first resilient roller surface and the second resilient roller surface have a hardness of about 15 to about 85 shore.

5. The single-plate bichromal separating inking unit according to any one of claims 1 to 4, wherein the separating inking roller is removably secured to the roller and axially positioned by a securing means.

6. The single-plate bichromal ink-jet device according to claim 5 wherein said fixing means may be a set screw and/or a set key.

7. The single-plate bicolor separating and inking apparatus according to claim 5, wherein said separating and distributing roller is axially reciprocable to couple the two inks.

8. Printing unit, characterized in that it has a single-plate bichromal separation inking unit according to any one of claims 1 to 7.

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