CN103282206B - Method and device for ink transfer and feed, and printing apparatus having the device - Google Patents

Abstract

An ink delivery method and device, and printing equipment including the device, wherein the ink delivery device includes: at least one set of ink delivery mechanisms, and each set of ink delivery mechanisms includes at least an ink supply device, a color model roller, and an ink delivery device The ink transfer roller is connected with a printing plate cylinder; the inking mechanism and the printing plate cylinder are respectively driven by the first and second driving systems. In the specified time, the printing plate cylinder rotates at a constant speed, and the ink transfer roller can move at a variable speed relative to the printing plate cylinder, so that the ink transfer position of the ink transfer roller relative to the printing plate cylinder is staggered by a specified distance, and the distance between the ink transfer roller and the printing plate cylinder is staggered. The size can be adjusted according to the format requirements of the printed product, and there is no need to replace the color mold roller, ink transfer roller and printing plate cylinder, etc. The printing requirements of printed products have greatly improved the printing quality and production efficiency.

Description

Method and device for transferring ink and ink, and printing equipment with the same

technical field

The invention relates to an ink transfer and ink transfer method and device for graphic printing and printing equipment with the device.

Background technique

In order to ensure the normal order of social and economic activities, anti-counterfeiting printing is used in the printing process of banknotes, securities, bills and other valuable securities.

In order to improve the anti-counterfeiting level of securities, people usually print two or more colors of images and texts on securities. For the continuous printing of images and texts along the circumference of the printing plate cylinder, different color areas are rotated on the same rotation of the printing plate cylinder. The surface is demarcated, so ink must be supplied at fixed points for different color areas to ensure the accuracy of the demarcation.

The currently known fixed-point ink supply method is to make the diameter of the printing plate cylinder an integer multiple of the diameter of the ink transfer cylinder, so as to ensure that every point on the surface of the printing plate cylinder and a certain point on the surface of the ink transfer roller are always in the process of rotating ink transfer. One to one correspondence. Although this fixed-point ink supply method is easy to implement, since a certain point on the printing plate cylinder is always supplied with ink by a fixed point on the surface of the ink transfer roller, during the printing process, some areas on the surface of the printing plate cylinder Insufficient ink supply will inevitably occur, which may directly affect the quality of the product and the anti-counterfeiting performance of securities, and even produce waste products.

In order to avoid the phenomenon that a certain area on the surface of the printing plate cylinder that is prone to appear in the above-mentioned known technology may be insufficiently supplied with ink, the inventors of the present case considered that in the process of transferring ink from the ink transfer roller to the printing plate cylinder, the The ink performs a relative positional displacement. And in the Chinese patent No. 200410050147.8, a kind of "dislocation ink transmission number connection printing device" is disclosed. The misplaced ink transfer number wiring printing device includes a number printing unit, and the number printing unit includes a number cylinder, an impression cylinder and two sets of inking systems, and each set of inking systems consists of an ink supply device, a color mold roller, and an ink transfer roller. Composition, the diameter of the color mold roller matches the diameter of the ink transfer roller, the ink transfer roller in the two sets of inking systems is the number cylinder to transfer ink, and the diameter ratio of the number cylinder to the ink transfer roller is a non-integer. After the diameter of the number cylinder and the diameter of the ink transfer roller are made into an integer multiple, during the working process, the number cylinder rotates J circles, and the ink transfer roller rotates P circles to complete an ink transfer cycle, so that in each ink transfer cycle, the number drum The same color area of each number is transferred J times by the J ink storage area on the corresponding ink transfer roller, so that each number can be fully supplied with ink to eliminate the defect of insufficient ink and ensure the printing quality.

In this dislocation ink supply number connection printing device, the diameter of the number cylinder is designed to be a non-integer multiple of the diameter of the ink transfer roller. Although the purpose of dislocation ink transfer is achieved in this way, the diameters of the ink transfer roller, color mold roller and number cylinder All are limited by the format of the printed product. This known structure requires that the circumference of the outer surface of the ink transfer roller must be an integral multiple of the common divisor of the banknote width, otherwise the misaligned ink transfer cannot be performed accurately. Therefore, in this known structure, when changing the printed matter, that is, when the size and pattern position of the printed matter change, because the dislocation spacing of the misaligned ink transfer has changed, it is necessary to replace the ink transfer roller, the color mold roller and the number. (Printing plate) The complete set of cylinders including the cylinder can meet the requirements of dislocation ink transfer. The known structure is complex, the scope of application is limited, the operating cost is high in actual production, and it takes a lot of time to replace the entire set of rollers, which also leads to an increase in production cost.

Contents of the invention

The object of the present invention is to provide a method and device for ink transfer and ink delivery and printing equipment including the device.

For this reason, the present invention proposes a kind of ink delivery ink method, and this method is to drive the inking mechanism and printing plate cylinder respectively by two independent first driving systems and the second driving system, wherein each group of inking mechanism at least It includes an ink supply device, a color model roller and an ink transfer roller. The ink transfer roller is connected to a printing plate cylinder; within a specified time, the printing plate cylinder rotates at a constant speed, and the ink transfer roller can The printing plate cylinder moves at a variable speed, so that the ink transfer roller moves relative to the ink transfer position of the printing plate cylinder by a specified distance.

Wherein, after the color mold roller is the ink transfer roller for the ink transfer roller, the ink storage area corresponding to the size and spacing of each color module group on the color mold roller is formed on the ink transfer roller, and each ink storage area is composed of the ink transfer roller and the ink transfer roller. The color modules in the color module groups are composed of ink storage blocks with the same size and spacing; and the ink storage area on the ink transfer roller corresponds to the image and text area set on the printing plate cylinder.

Further, when the printing plate cylinder rotates to its working position and is opposite to the ink transfer roller, the color model roller and the ink transfer roller driven by the first drive system and the printing plate cylinder driven by the second drive system The plate cylinder rotates at the same speed; when the plate cylinder rotates to its non-working position opposite to the ink transfer roller, the first drive system drives the color model roller and the ink transfer roller to be larger or smaller than the The rotation speed of the printing plate cylinder makes the printing plate cylinder rotate once a week, and the same color area of each graphic and text area on its working position can be replaced by different ink storage blocks or ink storage blocks of the same ink storage area on the ink transfer roller. The ink is transferred from different ink storage areas on the ink transfer roller.

In addition, the specified distance between the ink transfer roller and the ink transfer position of the printing plate cylinder is an integral multiple of the distance between two adjacent ink storage blocks in the same ink storage area.

The prescribed spacing of the ink transfer roller relative to the ink transfer position of the printing plate cylinder is 1 to m-1 times the distance between two adjacent ink storage blocks in the same ink storage area, wherein, m is the number of ink storage blocks in the same ink storage area.

The present invention also provides an ink transfer device, which includes: at least one group of ink transfer mechanisms, each group of ink transfer mechanisms at least includes an ink supply device, a color model roller and an ink transfer roller; the ink transfer roller and a printing plate The cylinders are connected; the inking mechanism and the plate cylinder are respectively driven by the first and second driving systems.

In addition, the present invention also provides a printing device having the above-mentioned ink delivery device.

The characteristics and advantages of the present invention compared with known technology are:

Since the inking mechanism and the printing plate cylinder are respectively driven by two different independent drive systems, within a certain period of time, the printing plate cylinder rotates at a constant speed, while the inking mechanism moves at a variable speed relative to the printing plate cylinder according to a certain rule. Make the inking mechanism stagger a certain distance relative to the ink transfer position of the plate cylinder in each movement cycle according to a certain rule, and the size of the ink transfer staggering distance of the inking mechanism can be adjusted according to the format requirements of the printed product , It can well ensure that the ink feeding mechanism can fully supply ink to the printing plate and meet the printing requirements of different printed products. When replacing different printed products, the present invention only needs to replace the color module groups on the outer surface of each color mold wheel, and at the same time adjust the control system of the drive system of the ink delivery mechanism, so as to realize the change of the misaligned ink delivery distance without changing the color modules. mold roller, ink transfer roller and printing plate cylinder, etc., therefore, the present invention can greatly save time and production cost, and improve the production efficiency of printing equipment.

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 structural view of the driving part of the ink delivery device of the present invention;

Fig. 2 is a schematic structural view of the ink delivery device of the present invention before misalignment adjustment;

Fig. 3 is a structural schematic diagram of the misalignment adjustment of the ink delivery device of the present invention;

Fig. 4 is an expanded view of the outer circumferential surface of the color mold wheel in the present invention, showing the position of the color module group set on it and the positional relationship between the color modules;

Fig. 5 is a schematic structural view of another embodiment of the ink delivery device of the present invention;

Fig. 6 is a schematic structural view of a printing unit in a printing device having an ink delivery device of the present invention;

Fig. 7 is a schematic structural view of the color model roller in the ink transfer device of the present invention.

Detailed ways

An ink delivery device proposed by the present invention includes: at least one group of ink delivery mechanisms, each group of ink delivery mechanisms at least includes an ink supply device, a color die roller, and an ink delivery roller; the ink delivery roller and a printing plate cylinder connected; the inking mechanism and the plate cylinder are respectively driven by the first and second drive systems.

Further, the diameters of the color die roller and the ink transfer roller are equal to or integer multiples of each other.

Further, the color mold roller has a central axis and at least one color mold wheel arranged on it, and at least one color module group is arranged on the outer peripheral surface of each color mold wheel.

Each color module group is composed of at least two color modules, and the shapes and distances between the color modules are the same.

Further, after the color mold roller transfers ink to the ink transfer roller, ink storage areas corresponding to the size and spacing of each color module group on the color mold roller are formed on the ink transfer roller, and each ink storage area is composed of The color modules in the color module groups are composed of ink storage blocks with the same size and spacing of the color modules.

Further, the ink storage area on the ink transfer roller corresponds to the image and text area set on the printing plate cylinder.

The ink delivery method proposed by the present invention is that the ink delivery mechanism and the plate cylinder are respectively driven by two independent drive systems, wherein each group of ink delivery mechanisms at least includes an ink supply device, a color model roller and an ink transfer roller, so The ink transfer roller is connected with a printing plate cylinder; within a specified time, the printing plate cylinder rotates at a constant speed, and the color model roller and the ink transfer roller can move at a variable speed relative to the printing plate cylinder, so that the printing plate cylinder The ink transfer position of the color model roller and the ink transfer roller relative to the printing plate cylinder is staggered by a specified distance.

A feasible scheme is that, when the plate cylinder rotates to its working position and is opposite to the ink transfer roller, the first drive system drives the color model roller and the ink transfer roller and the second drive system drives the ink transfer roller. The plate cylinder rotates at the same speed; when the plate cylinder rotates to its non-working position opposite to the ink transfer roller, the first drive system drives the color mold roller and the ink transfer roller to be greater than or less than The rotational speed of the plate cylinder rotates. Every time the printing plate cylinder rotates once, the same color area of each graphic area on its working position can be replaced by different ink storage blocks in the same ink storage area on the ink transfer roller or by different ink storage blocks on the ink transfer roller. Ink zone carries out ink transfer.

Specifically, the specified spacing of the stagger is an integer multiple of the spacing between two adjacent ink storage blocks in the same ink storage area on the ink transfer roller, that is, it can be between 1 and (m-1). Integers between, m is the number of ink storage blocks in the same ink storage area.

The present invention adopts two independent driving systems to respectively drive the inking mechanism and the printing plate cylinder. In the working area, the color model roller, the ink transfer roller and the printing plate cylinder can move at the same speed. When the printing plate cylinder rotates to the non-working area , then the color mold roller and the ink transfer roller can be rotated at a speed greater than or lower than that of the printing plate cylinder, so that the ink transfer roller can be staggered by a specified distance relative to the printing plate cylinder to ensure that the printed image and text on the printing plate cylinder Each time the same color area of the corresponding ink transfer roller is transferred from different ink storage blocks of the same ink storage area on the corresponding ink transfer roller or from different ink storage areas on the corresponding ink transfer roller, so that each color area of the printed graphic can be fully supplied with ink . When changing the type of printed matter, the distance between the graphic and text areas on the printing plate cylinder will change, the distance between the ink storage area on the corresponding ink transfer roller and the distance between the misplaced ink transfer will all change. For the present invention, it is only necessary to replace The color module group on the outer surface of the color model wheel and change the drive control system at the same time to adjust the distance between the color module group on the color model wheel and the misaligned ink transfer without replacing the color model roller, ink transfer roller and plate cylinder, etc. The production efficiency can be greatly improved, the production cost can be reduced, and the scope of application of products applying the technical equipment can be greatly improved.

The printing equipment proposed by the present invention includes the above-mentioned ink transfer and ink transfer device, wherein the plate cylinder and the impression cylinder are driven by the second drive system.

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation, structure, characteristics and effects of the ink delivery device, method and equipment of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. The description is as follows. In addition, through the description of the specific implementation, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically. However, the attached drawings are only for reference and illustration, and are not used to limit the present invention. .

Fig. 1 is a schematic structural view of the driving part of the ink delivery device of the present invention; Fig. 2 is a schematic structural view of the ink delivery device of the present invention before the dislocation adjustment; Fig. 3 is a structure of the ink delivery device of the present invention after the dislocation adjustment Schematic diagram; Fig. 4 is an expanded view of the outer peripheral surface of the color mold wheel in the present invention, showing the position of the color module group set on it and the positional relationship between each color module; Fig. 5 is another ink delivery device of the present invention A schematic structural view of an embodiment; FIG. 6 is a schematic structural view of a printing unit in a printing device having an ink delivery device of the present invention. Fig. 7 is a schematic structural view of the color model roller in the ink transfer device of the present invention.

As shown in the figure, the ink delivery device proposed by the present invention includes: at least one group of ink delivery mechanism 10, each group of ink delivery mechanism at least includes an ink supply device 13, a color mold roller 12 and an ink delivery roller 11; The roller 11 is connected with a plate cylinder 30; the inking mechanism 10 and the plate cylinder 30 are respectively driven by the first and second drive systems.

Wherein, the diameters of the color mold roller 12 and the ink transfer roller 11 are equal or are integer multiples of each other. In this embodiment, as shown in FIGS. 1, 2, 3, 5, and 6, only the color mold roller 12 The same diameter as the ink transfer roller 11 will be described as an example.

Wherein, the color die roller 12 has a central axis 12", and at least one color die wheel 12' arranged thereon, at least one color module group 120 is arranged on the outer circular surface of the color die wheel 12', each color die The module group is made up of at least two color modules, and the shape, quantity and mutual spacing of each color module group 120 arranged on the outer peripheral surface of the color mold wheel 12' are the same, and the shape and shape of each color module in the same color module group are the same. the same distance from each other.

Wherein, the connection mode of the color mold wheel 12' on the central axis of the color mold roller 12 is a commonly used known technology, and will not be repeated here.

In this embodiment, taking the diameter ratio of the color mold roller 12, the ink transfer roller 11 and the plate cylinder 30 as 1:1:2 as an example, it schematically shows that the color mold wheel 12' on the outer peripheral surface There are 3 color module groups 120, and the 3 color module groups in the figure are represented by reference numerals 121, 122, 123 respectively, and each color module group is composed of four color modules a, b, c, d. At the same time, there are three graphics and text areas 300 in the working area of the printing plate cylinder 30, which are represented by reference numerals 301, 302, and 303 respectively, as shown in FIG. 2 .

After the color mold roller 12 is inked for the ink transfer roller 11, three ink storage areas 110 corresponding to the three color module groups 121, 122, 123 on the color mold roller are formed on the ink transfer roller 11, as shown in Fig. The three ink storage areas 110 are represented by reference numerals 111, 112, and 113 respectively, and each ink storage area 110 is composed of four ink storage blocks a', b', c', and d'. The three graphic areas 300 on the printing plate cylinder correspond to the three ink storage areas formed on the ink transfer roller 11 one by one, and the four ink storage blocks a', b', c', d' supply ink for them according to certain regular rounds.

In addition, the surface of the ink transfer roller 11 is made of elastic material, and the surface of the color die roller 12 is made of hard material. The hardness of the elastic material can be 30 degrees to 45 degrees Shore, for example, it can be a rubber layer or a polyester layer; the hard material can be a nylon plate or a metal plate.

Of course, the ink delivery ink delivery device of the present invention is not limited to only one set of ink delivery mechanism 10 is provided. The quantity can be set according to actual needs, wherein, the structure and principle of each group of ink delivery mechanisms are the same, and this article only takes one group of ink delivery mechanisms as an example for illustration.

A printing device proposed by the present invention includes at least a printing unit as shown in FIG. 6 , and the printing plate cylinder 30 and the impression cylinder 50 are driven to rotate synchronously by the second drive system.

In a specific embodiment, the ink supply mechanism 10 is supplied with ink by a set of independent ink supply devices 13, wherein each set of ink supply mechanisms 13 may be composed of an ink fountain, an ink fountain roller, an inking roller, an ink distribution roller, and the like. Each group of inking mechanism 10 comprises ink supply mechanism 13, color model roller 12 and ink transfer roller 11 interconnected in sequence, ink is passed to ink transfer roller 11 through color model roller 12 by described ink supply mechanism 13, then by The ink transfer roller 11 transfers the ink to the corresponding graphic area 300 on the printing plate cylinder 30 in contact with it. The inking mechanism 10 of the present invention is driven independently by the first drive system, please refer to FIG. 1, it can be driven independently by the servo motor 40, and the plate cylinder 30 and the impression cylinder 50 are driven by the second drive system, such as Can be driven by another motor (not shown in the figure). In this embodiment, the color die roller 12 is connected to the first drive system, and the color die roller 12 and the ink transfer roller 11 are driven to rotate synchronously through the gear 41 meshing with each other, and the color die roller 12 The diameter is equal to the diameter of the ink transfer roller 11 .

Of course, Fig. 1 is only a specific embodiment, and the servo motor 40 is not limited to driving the color mold roller 12, and can also directly drive any shaft in the ink transfer roller, the ink string roller and the ink distribution roller, and drive the inking mechanism through gear transmission The other rollers rotate synchronously.

As shown in Figure 5, when there are two sets of inking mechanisms 10, an optional solution is that an independent drive system 40 can synchronously drive the color model rollers 12, 22 in the two sets of inking mechanisms, and through mutual engagement The gears respectively drive the ink transfer rollers 11 and 21 in the two groups of ink delivery mechanisms 10 to rotate synchronously. Another feasible embodiment is that the two groups of inking mechanisms 10 are respectively driven by two drive systems, such as two servo motors, and the two servo motors are kept rotating synchronously. Its control method is a known technology, and will not be repeated here.

The working principle of the present invention is: the inking mechanism 10 is driven by the first drive system (such as the servo motor 40), wherein the inking mechanism 10 at least includes an ink supply mechanism 13, a color model roller 12 and an ink transfer mechanism connected to each other in sequence. Roller 11 , under the drive of servo motor 40 , the color model roller 12 and the ink transfer roller 11 rotate synchronously. The ink transfer rollers 11 are respectively connected to a plate cylinder 30, and the plate cylinder 30 and the impression cylinder 50 are driven to rotate synchronously by another drive system (not shown in the figure).

During operation, the ink transfer roller 11 of the inking mechanism 10 transfers the ink to the corresponding printing plate cylinder 30 respectively. Within a certain period of time, the printing plate cylinder 30 rotates at a constant speed, and the inking mechanism 10 moves at a variable speed relative to the printing plate cylinder 30 according to a certain rule, so that the inking mechanism 10 moves relative to the printing plate cylinder 30 in each movement cycle. The position of the ink transfer is staggered to a certain distance according to a certain rule. Specifically, when the printing plate cylinder 30 is rotated to its working position (that is, the position where the image and text area 300 is arranged on it) and is opposite to the ink transfer roller 11, as shown in FIG. 2 , in this embodiment, When the image and text areas 301, 302, 303 of the printing plate cylinder 30 are in relative contact with the ink storage blocks a' of the ink storage areas 111, 112, 113 of the ink transfer roller 11, the servo motor 40 drives the color mold roller 12 The transfer roller 11 rotates synchronously with the same rotational speed as the plate cylinder 30 . And when described printing plate cylinder 30 rotates to its non-working position A (that is, the position that does not set picture and text on it) and when described ink transfer roller 11 is opposite, that is, when ink transfer roller 11 and printing plate cylinder 30 The image and text areas 300 set on the top are in contact with each other. After completing one ink transfer, when the printing plate cylinder 30 rotates to its non-working position A corresponding to the ink transfer roller 11, the servo motor 40 drives the The color model roller 12 and the ink transfer roller 11 rotate at a speed greater than or lower than the printing plate cylinder 30, so that the printing plate cylinder 30 rotates once to complete one ink transfer cycle, and in the next ink transfer cycle, the printing plate Each image and text area 300 on the cylinder 30 is transferred ink to it by different ink storage blocks of the same ink storage area 110 on the ink transfer roller 11, as shown in Figure 3, which schematically shows the ink transfer with respect to that shown in Figure 2 After the corresponding ink transfer between the ink transfer roller 11 and the printing plate cylinder, the servo motor 40 has completed the speed change adjustment, so that the corresponding ink transfer position of the ink transfer roller 11 and the printing plate cylinder 30 has been misaligned, and the ink storage area 111 , 112, 113 ink storage block c' to the graphic area 301, 302, 303 for ink transfer.

More specifically, when the ink transfer roller 11 is in the working area of the printing plate cylinder 30, it rotates synchronously with the printing plate cylinder 30, and by cooperating with the printing plate cylinder 30, each ink storage area 110 on the ink transfer roller 11 The ink of the printing plate cylinder 30 is transferred to each graphic area 300 set in the working area. When the ink transfer roller 11 is in the non-working area A (i.e. neutral) of the printing plate cylinder 30, the rotational speed of the ink transfer roller 11 is different from that of the printing plate cylinder 30, that is, the stepless speed regulation is carried out by the servo motor 40 to drive The color die roller 12 is shifted according to the preset spacing. Since the color die roller 12 and the ink transfer roller 11 are connected by gears, and the diameter ratio is 1:1, the ink transfer roller 11 and the color die roller 12 realize Misalignment. For example, in the first cycle (see FIG. 2 ), at first the ink storage block a' in each ink storage area 111, 112, 113 of the ink transfer roller 11 is the corresponding image on the printing plate cylinder 30. Text area 301,302,303 carries out ink transfer. When entering the non-working area, the speed of the ink transfer roller is adjusted under the drive of the servo motor 40, so that in the second working cycle, that is, when the printing plate cylinder 30 is in the working area again, the ink transfer roller 11 is driven by the ink transfer roller 11. Other ink storage blocks except ink storage block a' in each ink storage area 111, 112, 113, for example, in Fig. 3, the image-text area 301, 302,303 carry out ink transfer.

FIG. 3 is just an example for illustrating that the ink storage area on the ink transfer roller 11 is shifted by three color module distances relative to the printing plate cylinder 30 , but it is not limited thereto. After the speed adjustment of the color model roller and the ink transfer roller is completed in the non-working area of the printing plate cylinder, in the next working cycle, the ink transfer for the same image and text area on the printing plate cylinder 30 can be the same ink transfer roller 11. Any other ink storage block in the ink storage area except the ink storage block a', as long as the distance between the two adjacent ink storage blocks in the same ink storage area on the ink transfer roller is satisfied for each speed change Integer multiples of the space between them can be an integer between 1 and (x-1), where x is the number of ink storage blocks in the same ink storage area. Like this, every time the printing plate cylinder 30 rotates a circle, the ink transfer roller 11 can realize misplaced ink transfer once, which ensures that the same image and text area 300 on the printing plate cylinder 30 is made by the same ink storage area 110 on the ink transfer roller 11 every time. Inking is performed on different ink storage blocks, so that each image and text area can be fully supplied with ink, and the printing quality of the printed images and texts on the securities is correspondingly guaranteed.

For example: the printing plate cylinder 30 runs at a speed of 8,000 revolutions per hour. When the ink transfer roller 11 rotates to the working area of the printing plate cylinder 30, the inking mechanism 10 is driven by the first drive system in the same manner as the printing plate cylinder 30. Rotate at a rotating speed; Whenever the ink transfer roller 11 rotates to the non-working area A of the printing plate cylinder 30, the inking mechanism 10 runs at a speed of 6000 revolutions per hour driven by the first drive system (servo motor 40); like this After one working cycle, the ink transfer roller 11 of the inking mechanism transfers ink to the plate cylinder as shown in Figure 2 and Figure 3, and the ink storage block a' in the ink storage area 111 is adjusted to the ink storage block a' in the ink storage area 111. The ink storage block c' transmits ink to the corresponding same image and text area on the printing plate cylinder 30 . In this way, when the ink transfer roller of the inking mechanism rotates n laps, the printing plate cylinder rotates m laps, (of course, in the next movement cycle, the ink transfer roller of the inking mechanism can also be rotated n laps, so that the printing plate cylinder Rotated k circles.) Guarantee that each ink storage block in the same ink storage area 110 on the ink transfer roller 11 is repeatedly supplied with ink by the corresponding color module on the color model roller 12, and then to the upper figure of the printing plate cylinder 30 The text area 300 supplies ink, so that the amount of ink supplied to the text area 300 of the printing plate cylinder 30 is guaranteed, thereby ensuring the printing quality.

Therefore, the present invention overcomes the known structural requirement that the diameter ratio of the printing plate cylinder to the ink transfer roller is a non-integer number, and the circumference of the outer surface of the ink transfer roller must be an integer multiple of the common divisor of the width of the banknote, otherwise the misplaced ink transfer cannot be realized. defect. Known structure when printing number (image-text area) spacing different products, then must change the complete set of cylinder that comprises color model roller, ink transfer roller and number cylinder.

However, the present invention adopts the inking mechanism 10 to be driven by the first drive system, for example, the color model roller 12 is driven by the servo motor 40, and the printing plate cylinder 30 is driven by another drive system, so that the ink transfer roller 11 can be flexibly adjusted. According to the distance B between the color modules in the color module group, the dislocation distance is adjusted, so that each ink storage block in the same ink storage area on the ink transfer roller 11 is supplied with ink by the color module on the color mold roller 12 for many times, and then to the printing ink. The image-text area 300 on the plate cylinder 30 supplies ink to ensure that the image-text area 300 is fully supplied with ink, thereby improving the quality of printed matter. When changing the printed matter, that is, the distance between the graphic and text areas on the printing plate cylinder 30 changes, and the present invention only needs to change the size and spacing of the color modules in the color module group on the outer peripheral surface of the color mold wheel, and modify the drive control system at the same time To change the predetermined staggered spacing without replacing the color mold roller, ink transfer roller and printing plate cylinder, etc., which saves time and production costs, and improves the production efficiency of printing equipment, which can meet the printing requirements of different printing products. Require.

The printing plate cylinder 30 in this embodiment is a relief cylinder, but not limited thereto.

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. And it should be noted that each component of the present invention is not limited to the above-mentioned overall application, and each technical feature described in the description of the present invention can be selected to be used alone or in combination according to actual needs. Therefore, the present invention Other combinations and specific applications related to the invention of this case are naturally covered.

Claims (14)

1. An ink transfer and inking method is characterized in that an inking mechanism and a plate cylinder are respectively driven by two independent first driving systems and two independent second driving systems, wherein each group of inking mechanism at least comprises an ink supply device, a color mold roller and an ink transfer roller, and the ink transfer roller is connected with the plate cylinder; the plate cylinder rotates at a constant speed for a prescribed period of time, and the ink transfer rollers can perform variable speed movement relative to the plate cylinder to stagger the ink transfer positions of the ink transfer rollers relative to the plate cylinder by a prescribed interval.

2. The method of claim 1, wherein at least one color module set is provided on an outer circumferential surface of the color module roll, each color module set is composed of at least two color modules, and the color modules have the same shape and the same interval therebetween.

3. The ink transfer and delivery method according to claim 2, wherein when the color cylinder transfers ink to the ink transfer roller, ink storage areas corresponding to the size and the pitch of the color module groups on the color cylinder are formed on the ink transfer roller, and each ink storage area is composed of ink storage blocks having the same size and the same pitch as the color modules in each color module group; and the ink storage area on the ink transfer roller corresponds to the image-text area arranged on the plate cylinder.

4. The method of claim 3, wherein the impression cylinder and the ink transfer rollers driven by the first drive system rotate at the same rotational speed as the plate cylinder driven by the second drive system when the plate cylinder is rotated to its operative position opposite the ink transfer rollers; the printing plate cylinder rotate to its inoperative position with the distributor roller is relative to each other, a driving system drive colour former roller and distributor roller are in order to be greater than or to be less than the rotational speed of printing plate cylinder is rotatory, makes every revolution of printing plate cylinder, the same colour zone in every picture and text district on its operative position can by the different ink storage piece of same ink storage district on the distributor roller or by different ink storage district carries out the ink transfer on the distributor roller.

5. The ink transfer and delivery method according to claim 3 or 4, wherein the prescribed pitch of the ink transfer rollers relative to the ink transfer position of the plate cylinder is an integral multiple of the pitch of two adjacent ink reservoirs in the same ink reservoir.

6. The method of claim 5, wherein the prescribed spacing of the ink transfer rollers relative to the ink transfer position of the plate cylinder is offset by 1 to x-1 times the spacing between adjacent ink reservoirs in the same ink reservoir, where x is the number of ink reservoirs in the same ink reservoir.

7. An ink transfer and inking device, comprising: at least one group of inking mechanisms, wherein each group of inking mechanisms at least comprises an ink supply device, a color mold roller and an ink transfer roller; the diameters of the color mold roller and the ink transfer roller are equal or integral multiples of each other; the ink transfer roller is connected with a plate cylinder; the inking mechanism and the plate cylinder are respectively driven by a first driving system and a second driving system, the plate cylinder rotates at a constant speed within a specified time, and the ink transfer rollers can perform variable-speed motion relative to the plate cylinder so as to make the ink transfer rollers dislocate relative to the ink transfer position of the plate cylinder by a specified interval.

8. The ink delivery and delivery device of claim 7, wherein the color wheel comprises a central shaft and at least one color wheel disposed thereon, and wherein at least one color module set is disposed on an outer circumferential surface of each color wheel.

9. The ink delivery and delivery device of claim 8, wherein each set of color modules comprises at least two color modules, and wherein the color modules are identical in shape and spacing from each other.

10. The ink transfer and delivery apparatus of claim 9, wherein when said color cylinder transfers ink to said ink transfer roller, ink reservoirs are formed on the ink transfer roller corresponding to the size and spacing of the color module groups on the color cylinder, and each ink reservoir is formed of ink reservoirs having the same size and spacing as the color modules in each of said color module groups.

11. The ink transfer and delivery apparatus according to claim 7, wherein when said color cylinder transfers ink to said ink transfer roller, ink storage areas corresponding to the size and pitch of the color module groups of the color cylinder are formed on the ink transfer roller, and each ink storage area is composed of ink storage blocks having the same size and pitch as the color modules of each color module group, and the ink storage area on the ink transfer roller corresponds to the image area provided on said plate cylinder.

12. The ink transfer and delivery apparatus of claim 7, wherein the surface of the ink transfer roller is made of an elastic material having a hardness of 30 degrees to 45 degrees shore; the surface of the color cylinder is made of a hard material.

13. The ink transfer and delivery device of claim 12, wherein the elastomeric material is a rubber layer or a polyester layer; the hard material is a nylon plate or a metal plate.

14. A printing apparatus comprising an inking and inking unit according to any one of claims 7 to 13, wherein the inking unit is driven by a first drive system, the plate cylinder and impression cylinder are driven by a second drive system, the plate cylinder is rotated at a constant speed for a prescribed period of time, and the ink transfer rollers are capable of variable speed movement relative to the plate cylinder to offset the ink transfer positions of the ink transfer rollers relative to the plate cylinder by a prescribed spacing.