CN110744922B - Base oil printing device and base oil printing process - Google Patents

Abstract

The invention discloses a base oil printing device and a base oil printing process, and relates to the technical field of printing surface treatment. The bottom oil printing device comprises a bottom oil groove, wherein the bottom oil groove comprises at least one group of inking zones, each group of inking zones comprises a plurality of inking subareas, the inking subareas are arranged along the length direction of the bottom oil groove and correspond to the pattern subareas of a printing stock one by one, so that bottom oil is printed on the pattern subareas simultaneously; the base ink printing device further comprises an oil supply mechanism, wherein the oil supply mechanism comprises a plurality of oil supply modules, each oil supply module is arranged in one-to-one correspondence with the inking subareas in each group of inking subareas, and the oil supply modules are configured to convey base ink to the corresponding inking subareas in each group of inking subareas. This base oil printing device can carry multiple base oil to base ink groove simultaneously, and multiple base oil can be printed simultaneously on a plurality of pattern subregion of stock, makes the same pattern region of stock once only print multiple base oil, and then has improved stock surface treatment efficiency.

Description

Base oil printing device and base oil printing process

Technical Field

The invention relates to the technical field of printing surface treatment, in particular to a base oil printing device and a base oil printing process.

Background

The surface treatment of the printed product is to perform decorative treatment on the surface of the printed product through processes of film coating, glazing, bump pressing and the like so as to enhance the aesthetic property of the surface of the printed product and improve the quality and brand effect of the product. The local glazing, the reverse glazing, the snowflake, the wrinkle and other processes can bring different gloss feelings and touch feelings on the surface of the printed product, if the surface of the printed product needs to realize the texture effects of various gloss feelings and touch feelings at the same time, various processes are usually required to be combined, the process is realized by different base oil, surface oil or other single texture oil in a grading manner, the process is various and complicated, the equipment investment is large, the power consumption is high, the production cost is increased, the printing efficiency is low due to the grading realization, and the delivery period of the printed product is possibly prolonged.

Therefore, it is an urgent need to solve the above-mentioned problems by those skilled in the art to improve the existing base printing apparatus and base printing process.

Disclosure of Invention

One object of the present invention is to provide a base ink printing apparatus, which can simultaneously deliver a plurality of base inks to a base ink tank, and the plurality of base inks can be simultaneously printed on a plurality of pattern sub-areas of a printing material, so that the same pattern area of the printing material can be printed with the plurality of base inks at one time, thereby improving the surface treatment efficiency of the printing material.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bottom ink printing device comprises a bottom ink tank, wherein the bottom ink tank comprises at least one group of ink feeding areas, each group of ink feeding areas comprises a plurality of ink feeding sub-areas, the plurality of ink feeding sub-areas are arranged along the length direction of the bottom ink tank and correspond to a plurality of pattern sub-areas of a printing stock one by one, and bottom ink is printed on the plurality of pattern sub-areas simultaneously;

the base oil printing device further comprises an oil supply mechanism, wherein the oil supply mechanism comprises a plurality of oil supply modules, each oil supply module is arranged in one-to-one correspondence with the inking subareas in each group of inking subareas, and the oil supply modules are configured to convey base oil to the inking subareas corresponding to the inking subareas in each group of inking subareas.

Optionally, the distance between two adjacent inking sub-areas is D, the serial stroke of a serial ink roller set of the base ink printing device is L, and D is larger than or equal to 2L.

Optionally, the oil supply module comprises:

the oil supply assembly is arranged on one side of the bottom ink groove, a closed space is formed in the oil supply assembly, and the closed space is configured to store the bottom ink; and

and one end of the oil conveying pipe part is communicated with the oil supply assembly, the other end of the oil conveying pipe part is an output port, and the output port is arranged corresponding to the inking sub-area.

Optionally, the oil supply assembly is provided with a plurality of oil outlets communicated with the closed space, and each oil outlet is communicated with one oil conveying pipe.

Optionally, the oil supply mechanism further comprises:

the ink guide beam extends along the length direction of the bottom ink groove and is arranged above the bottom ink groove, and one end, far away from the oil supply assembly, of the oil delivery pipe part is movably arranged on the ink guide beam.

Optionally, the oil transfer tubing section comprises:

one end of the connecting hose is detachably connected with the oil supply assembly; and

and the oil outlet spray pipe is communicated with the connecting hose, and the oil outlet spray pipe is movably arranged on the ink guide beam.

Optionally, a plurality of movable connecting portions are arranged on the ink guide beam along the length direction, the connecting portions are connected with the oil outlet nozzles in a one-to-one correspondence manner, and the connecting portions are configured to drive the oil outlet nozzles to move and enable the oil outlet nozzles to stop at the ink guide beam.

Optionally, a sliding groove is formed in the ink guide beam along the length direction, and each connecting portion is slidably connected with the sliding groove.

Optionally, the oil supply mechanism further comprises:

and the air supply part is communicated with the oil supply assembly and is configured to convey compressed air to the closed space, so that bottom oil in the oil supply assembly is output by the oil conveying pipe part.

Optionally, the bottom of the bottom ink tank includes an inclined surface, and the inclined surface is disposed to be inclined downward toward a direction close to the lower ink roller in the bottom ink tank, and the inclined surface is configured to guide the bottom ink to flow toward the lower ink roller side along the bottom of the bottom ink tank.

Optionally, the base oil printing apparatus further includes:

the ink guide pad is arranged on the bottom of the bottom ink groove, a plurality of ink guide flow channels are arranged on the ink guide pad, each ink guide flow channel is in one-to-one correspondence with the inking sub-area, and the ink guide flow channels are configured to guide the bottom ink to flow towards the lower ink roller side.

Another object of the present invention is to provide a base oil printing process, which uses the above base oil printing device, and the base oil printing device can simultaneously deliver multiple base oils to a base ink tank, and the multiple base oils can be simultaneously printed on multiple pattern sub-areas of a printing stock, so that the same pattern area of the printing stock can be printed with multiple base oils at one time, thereby improving the surface treatment efficiency of the printing stock.

In order to achieve the purpose, the invention adopts the following technical scheme:

a base oil printing process adopts the base oil printing device, and comprises the following process steps:

s01, injecting various types of bottom oil into the oil supply modules of the oil supply mechanism, wherein each oil supply module corresponds to one type of bottom oil;

s02, adjusting the serial stroke L of the ink serial roller group of the bottom oil printing device;

s03 printing the base ink simultaneously on a plurality of the pattern sub-areas of the substrate in one-to-one correspondence with the plurality of inking sub-areas.

Optionally, the spacing D between two adjacent inking sub-areas, the adjusted serial stroke L of the serial ink roller group in the step S02 satisfies: d is not less than 2L.

The invention has the beneficial effects that:

the invention provides a bottom oil printing device and a bottom oil printing process, wherein the bottom oil printing device comprises a bottom oil ink tank, the bottom oil ink tank comprises at least one group of inking zones, each group of inking zones comprises a plurality of inking subareas, the inking subareas are arranged along the length direction of the bottom oil ink tank and are in one-to-one correspondence with the pattern subareas of a printing stock, so that bottom oil is printed on the pattern subareas simultaneously; the base ink printing device further comprises an oil supply mechanism, wherein the oil supply mechanism comprises a plurality of oil supply modules, each oil supply module is arranged in one-to-one correspondence with the inking subareas in each group of inking subareas, and the oil supply modules are configured to convey base ink to the corresponding inking subareas in each group of inking subareas. This base oil printing device can carry multiple base oil to base ink groove simultaneously, and multiple base oil can be printed simultaneously on a plurality of pattern subregion of stock, makes the same pattern region of stock once only print multiple base oil, and then has improved stock surface treatment efficiency.

By adopting the base oil printing device, various base oils are injected into a plurality of oil supply modules of the oil supply mechanism through S01, and each oil supply module corresponds to one base oil; s02, adjusting the serial stroke L of the ink serial roller set of the base ink printing device; s03, the base oil is printed on the pattern sub-areas of the printing stock corresponding to the inking sub-areas one by one, so that the same pattern area of the printing stock is printed with a plurality of base oil at one time, and the surface treatment efficiency of the printing stock is improved.

Drawings

FIG. 1 is a schematic structural diagram of a printing base ink in a pattern sub-area of a printing material corresponding to an inking sub-area of a base ink tank according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base ink printing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an ink guide pad according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an oil supply mechanism according to an embodiment of the present invention.

In the figure:

10. a substrate; 101. a pattern area; 1011. a pattern sub-area; 1011a, a first pattern subregion; 1011b, a second pattern subregion; 1011c, a third pattern subregion;

1. a bottom ink tank; 11. an inking region; 111. an inking subregion; 111a, a first inking sub-zone; 111b, a second inking sub-zone; 111c, a third inking sub-zone;

2. an oil supply mechanism;

21. an oil supply module; 21a, a first oil supply module; 21b, a second oil supply module; 21c, a third oil supply module; 211. an oil supply assembly; 211a, a first oil supply assembly; 211b, a second oil supply assembly; 211c, a third oil supply assembly; 2111. an oil outlet; 2111a, a first oil outlet; 2111b, a second oil outlet; 2111c, a third oil outlet; 2112. a base; 2113. a tank body; 2114. a cover body; 2115. an ink amount detector; 2116. a control module; 212. a tubing section; 212a, a first oil delivery pipe section; 212b, a second oil delivery pipe part; 212c, a third oil delivery pipe section; 2121. a connecting hose; 2121c, a third connecting hose; 2122. an oil outlet spray pipe; 2122c, a third oil outlet spray pipe;

22. an ink guide beam; 221. a connecting portion; 221a, a first connection portion; 221b, a second connecting portion; 221c, a third connecting portion; 222. a chute;

23. an air supply part; 231. a first air inlet; 232. an air outlet; 233. a second air inlet; 234. an air duct;

3. an inking roller;

4. an ink guide pad; 41. an ink guide channel; 41a, a first ink guide channel; 41b, a second ink guide channel; 41c and a third ink guide channel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The processing process of the printed matter generally comprises two major links of primary color printing and surface treatment which are sequentially carried out, wherein the primary color printing means that four-primary color ink and other spot color ink are printed on a printing substrate according to a color sequence to obtain a color pattern on the printing substrate, and the surface treatment means that base oil and surface oil or other single texture oil are printed on the color pattern. The color patterns need to be dried and solidified before surface treatment, specifically, the surface treatment comprises base oil printing and surface oil printing, the base oil also needs to be dried and solidified after the base oil printing, then the surface oil printing is carried out, and the light sensation or touch surface effect can be printed on the color patterns through the steps.

With the continuous richness of surface effects and the continuous improvement of anti-counterfeiting requirements, how to print various different surface effects on the same colorful pattern becomes a current printed matter hot tide. The surface effect can be local glazing, reverse glazing, snowflake, wrinkle and the like, if different surface effects are required to be obtained on the same color pattern, the common means is to print a plurality of base oils on corresponding pattern sub-areas in a same color pattern in a plurality of times, only one base oil can be printed on one pattern sub-area each time, the base oil printing can be completed after a plurality of base oil printing, and then the drying curing and the surface oil printing are carried out, so that a plurality of surface effects shown on the same color pattern can be obtained. The multi-time printing process is various and complex, the input of printing equipment is high, the power consumption is high, the production cost is increased, the printing efficiency is low, the delivery period of printed products is influenced, and the operation of enterprises is directly influenced.

To solve the above problems in the prior art, as shown in fig. 1 and 2, the present embodiment provides a bottom ink printing apparatus, including a bottom ink tank 1, where the bottom ink tank 1 includes at least one group of inking regions 11, each group of inking regions 11 includes a plurality of inking sub-regions 111, the plurality of inking sub-regions 111 are arranged along a length direction of the bottom ink tank 1 and correspond to a plurality of pattern sub-regions 1011 of a printing material 10 one by one, so as to print bottom ink on the plurality of pattern sub-regions 1011 simultaneously; the base ink printing device further comprises an oil supply mechanism 2, wherein the oil supply mechanism 2 comprises a plurality of oil supply modules 21, each oil supply module 21 is arranged in one-to-one correspondence with the inking sub-areas 111 in each group of inking areas 11, and the oil supply modules 21 are used for conveying base ink to the corresponding inking sub-areas 111 in each group of inking areas 11.

This base oil printing device can carry multiple base oil to base oil ink tank 1 simultaneously, and multiple base oil can be printed simultaneously on a plurality of pattern subregion 1011 of stock 10 for the same pattern area 101 of stock 10 can once only print multiple base oil, just can make same pattern area 101 of stock 10 present multiple surface effect after conventional dry curing and face oil printing again.

Optionally, the base ink printing device can be matched with a color ink printing device and a surface ink printing device to realize online printing, the base ink printing device is arranged between the color ink printing device and the surface ink printing device, two or more than two surface effects can be printed on the printing stock 10 at one time through a flow printing process, the surface treatment efficiency and the printing product printing efficiency of the printing stock 10 are improved, and the base ink printing device is simple in structure. The color ink printing device and the face ink printing device belong to conventional devices in the field, and are not described in detail herein. Of course, the base ink printing device, the color ink printing device and the face ink printing device can be made into an integrated printing machine, and the printing machine can be specifically set according to actual needs.

The specific number of the oil supply modules 21 of the oil supply mechanism 2 can be determined according to the number of the pattern areas 101 of the printing material 10 and the number of the pattern sub-areas 1011 contained in each pattern area 101, and since each pattern sub-area 1011 corresponds to a surface effect and a surface effect is realized by printing a base oil, the number of the oil supply modules 21 should satisfy the number of the types of the surface effects. Generally, a plurality of pattern areas 101 are linearly arranged on the same printing material 10 in a direction perpendicular to the paper feeding direction, and the linearly arranged plurality of pattern areas 101 are arranged in the same pattern, that is, the arrangement of each pattern area 101 corresponding to a pattern sub-area 1011 is the same, which is in accordance with the printing process production rule of an enterprise. Therefore, in this embodiment, the number of the oil supply modules 21 of the base oil printing apparatus is the same as the number of the base oil, and each oil supply module 21 can simultaneously supply the base oil to the plurality of pattern sub-areas 1011 corresponding to the plurality of pattern areas 101. To achieve the above purpose, it is possible to provide a plurality of delivery pipe parts 212 on the oil supply module 21, and the plurality of delivery pipe parts 212 can simultaneously supply the same kind of base oil to the corresponding pattern sub-areas 1011 of the plurality of pattern areas 101.

Specifically, as shown in fig. 1, in the present embodiment, only one pattern area 101 is disposed on the printing material 10 in a direction perpendicular to the paper feeding direction, three pattern sub-areas 1011, namely a first pattern sub-area 1011a, a second pattern sub-area 1011b, and a third pattern sub-area 1011c, are linearly arranged on the pattern area 101, and the three pattern sub-areas 1011 correspond to three base oils, i.e., a, b, and c.

In the case of the pattern arrangement of the substrate 10 shown in fig. 1, as shown in fig. 1 and 2, correspondingly, the base ink tank 1 includes one inking region 11, the inking regions 11 each include three inking sub-regions 111, namely a first inking sub-region 111a, a second inking sub-region 111b and a third inking sub-region 111c, and the three inking sub-regions 111 are arranged along the length direction of the base ink tank 1. Of course, the oil supply mechanism 2 also includes three oil supply modules 21, which are a first oil supply module 21a, a second oil supply module 21b and a third oil supply module 21c, respectively, and each oil supply module 21 is arranged in one-to-one correspondence with the inking sub-area 111, that is, the first oil supply module 21a is used for conveying the base oil a for the first inking sub-area 111a, the second oil supply module 21b is used for conveying the base oil b for the second inking sub-area 111b, and the third oil supply module 21c is used for conveying the base oil c for the third inking sub-area 111 c. Because the three base stocks can be simultaneously conveyed into the base stock ink tank 1, the three base stocks can be simultaneously printed on the corresponding pattern sub-areas 1011 of the pattern area 101 of the printing stock 10 only by carrying and printing the three base stocks through the unified ink carrying roller group. Only need through conventional drying solidification and face oil printing again, can print simultaneously on the same pattern area 101 of stock 10 and form three kinds of different surface effects, simple structure, convenient operation.

Alternatively, as shown in fig. 1 and 2, the oil supply module 21 includes an oil supply unit 211 and an oil pipe portion 212, wherein the oil supply unit 211 is disposed at one side of the bottom ink tank 1, a closed space is formed in the oil supply unit 211, the closed space is used for storing bottom oil, one end of the oil pipe portion 212 is communicated with the oil supply unit 211, the other end of the oil pipe portion 212 is an output port for the bottom oil, and the output port is disposed corresponding to the inking sub-region 111.

Specifically, in the present embodiment, as shown in fig. 2, the oil supply mechanism 2 includes a first oil supply module 21a, a second oil supply module 21b, and a third oil supply module 21c, wherein the first oil supply module 21a includes a first oil supply unit 211a and a first oil delivery pipe portion 212a, the second oil supply module 21b includes a second oil supply unit 211b and a second oil delivery pipe portion 212b, and the third oil supply module 21c includes a third oil supply unit 211c and a third oil delivery pipe portion 212 c. The first oil supply unit 211a stores therein bottom oil a, the second oil supply unit 211b stores therein bottom oil b, and the third oil supply unit 211c stores therein bottom oil c.

In order to facilitate the arrangement of the bottom ink outlet port of the oil duct portion 212 corresponding to the inking sub-region 111, as shown in fig. 2, the oil supply mechanism 2 may further include an ink guide beam 22, the ink guide beam 22 extends along the length direction of the bottom ink tank 1 and is arranged above the bottom ink tank 1, and one end of the oil duct portion 212 far from the oil supply unit 211 is movably arranged on the ink guide beam 22, and the different positions of the pattern sub-region 1011 are corresponded by moving the oil duct portion 212.

Alternatively, to facilitate flexible adjustment of the position of the hose section 212 and to enhance the stability of the output port of the hose section 212, the hose section 212 may include a connection hose 2121 and an oil discharge nozzle 2122. One end of the connection hose 2121 is detachably connected to the oil supply unit 211, the oil outlet nozzle 2122 is connected to the connection hose 2121, and the oil outlet nozzle 2122 is movably disposed on the ink guide beam 22. The detachable connection can facilitate the increase or decrease of the oil pipe parts 212 corresponding to the number of the pattern areas 101 on the printing material 10, and the connecting hose 2121 can be freely deformed to flexibly adjust the position of the oil pipe parts 212. The oil outlet nozzle 2122 may be in the form of a straight pipe so that the outlet port is fixed, and the outlet port of the oil pipe portion 212 is always opposite to the inking sub-region 111.

To facilitate the fixing of the oil outlet nozzle 2122, optionally, a plurality of movable connection portions 221 may be disposed on the ink guide beam 22 along the length direction, and the connection portions 221 are disposed in one-to-one correspondence with and connected to the oil outlet nozzles 2122 and can drive the oil outlet nozzles 2122 to move, so that the oil outlet nozzles 2122 stop at the ink guide beam 22, and preferably, the stop position is aligned with the middle position of the inking sub-region 111, so that the bottom oil spreads uniformly on the inking sub-region 111. When the position of oil outlet nozzle 2122 needs to be adjusted, the position can be adjusted by moving connecting part 221, so that the width requirements of different pattern sub-areas 1011 can be met. The connecting portion 221 can be in the form of a clip, and can be clipped to different positions of the ink guide beam 22, so that the structure is simple, and the operation is convenient as long as the clip is detached and reinstalled on other positions of the ink guide beam 22.

Preferably, the ink guiding beam 22 is provided with a sliding groove 222 along the length direction, each connecting portion 221 is slidably connected with the sliding groove 222, the width is adjusted through the sliding connecting portion 221, the operation is more convenient, and the processing of the sliding groove 222 is also easy.

Specifically, in the present embodiment, as shown in fig. 2, three connecting portions 221, namely, a first connecting portion 221a, a second connecting portion 221b and a third connecting portion 221c, are disposed corresponding to the three pattern sub-areas 1011, each of the three connecting portions 221 is slidably connected to the sliding groove 222, and each of the connecting portions 221 is correspondingly connected to one oil outlet nozzle 2122. Taking the third oil supplying module 21c as an example, as shown in fig. 1, one end of the third connecting hose 2121c is detachably connected to the third oil supplying assembly 211c, the third oil discharging nozzle 2122c is communicated with the third connecting hose 2121c, the third oil discharging nozzle 2122c is connected to the third connecting portion 221c and can move along the sliding groove 222, and the third connecting hose 2121c can be flexibly deformed along with the movement.

Preferably, the bottom ink tank 1 includes an inclined surface provided to be inclined downward toward the direction close to the lower ink roller 3 in the bottom ink tank 1, the inclined surface serving to guide the bottom ink to flow toward the lower ink roller 3 side along the bottom of the bottom ink tank 1. In this embodiment, as shown in fig. 1 and 2, the inclined surface is divided into three inking sub-areas 111, so that a stable bottom oil flowing state can be formed by gravity, and the method is simple and easy to implement.

Preferably, the base ink printing apparatus may further include an ink guide pad 4, the ink guide pad 4 is disposed on the bottom of the base ink tank 1, a plurality of ink guide channels 41 are disposed on the ink guide pad 4, each ink guide channel 41 is disposed in one-to-one correspondence with the inking sub-area 111, and the ink guide channels 41 are configured to guide the base ink to flow toward the lower ink roller 3. In this embodiment, as shown in fig. 3, the ink guiding pad 4 is provided with three ink guiding channels 41, wherein a first ink guiding channel 41a is disposed corresponding to the first inking sub-region 111a, a second ink guiding channel 41b is disposed corresponding to the second inking sub-region 111b, a third ink guiding channel 41c is disposed corresponding to the third inking sub-region 111c, and the width of each ink guiding channel 41 is the same as the width of the corresponding pattern sub-region 1011. According to the above structure, the three types of base oils flow only below the lower ink roller 3 along the bottom of the tank in the respective ink guide channels 41 without spreading all around, thereby ensuring smooth flow of the base oils and further realizing stable oil supply.

In other embodiments, if a plurality of pattern areas 101 are linearly arranged on the substrate 10 in a direction perpendicular to the paper feeding direction, each pattern area 101 is provided with a plurality of pattern sub-areas 1011. When it is required to print a plurality of pattern sub-areas 1011 on a plurality of pattern areas 101 linearly arranged at the same time, optionally, a plurality of oil outlets 2111 communicating with the enclosed space may be provided on the oil supply unit 211, and each oil outlet 2111 communicates with an oil delivery pipe portion 212. The plurality of oil delivery pipe parts 212 of the same oil supply assembly 211 can simultaneously deliver the same type of base oil to the corresponding pattern sub-areas 1011 of the plurality of pattern areas 101, and the printing efficiency can be greatly improved.

Preferably, the number of the pattern areas 101 which are linearly arranged along the direction vertical to the paper feeding direction on the printing stock 10 is S, and S is more than or equal to 1 and less than or equal to 6. When the number of the pattern sub-areas 1011 linearly arranged on the same pattern area 101 is N, that is, the kind of the base oil is also N, and the number of the oil supply modules 21 is also N, the total number M of the oil delivery pipe parts 212 is: m is N × S.

Alternatively, the primer printing device may be pneumatically or electrically driven to deliver the primer. If the electric drive is adopted, the bottom oil can be pumped into the bottom ink tank 1 through the pumping mechanism; if pneumatic is adopted, the bottom oil can be pressed out by using an air supply mechanism. In the present embodiment, as shown in fig. 2 and 4, pneumatic driving is adopted, and specifically, the oil supply mechanism 2 includes an air supply portion 23, the air supply portion 23 is communicated with the oil supply unit 211, and the air supply portion 23 is used for supplying compressed air to the closed space, so that the bottom oil in the oil supply unit 211 is output from the oil pipe portion 212.

To achieve pneumatic actuation, the oil supply assembly 211 preferably includes a base 2112, a tank 2113, and a cover 2114, as shown in fig. 4. Wherein, the cover 2114 is connected with the upper end of the tank 2113 in a sealing way in an openable way, when the cover 2114 is opened, the bottom oil can be supplemented, in addition, a first mounting part used for being communicated with the first air inlet 231 of the air supply part 23 is arranged at one side of the cover 2114; the lower end of the tank 2113 is connected with a base 2112, one side of the base 2112 is provided with a plurality of second mounting parts for mounting a plurality of oil outlets 2111, and the other side of the base 2112 is provided with a third mounting part communicated with a second air inlet 233 of the air supply part 23 and a fourth mounting part communicated with an air outlet 232 of the air supply part 23. The second air inlet 233 is communicated with an external air source, the air outlet 232 is communicated with the first air inlet 231 through an air duct 234, and the second air inlet 233 is communicated with the air outlet 232. Specifically, the second mounting portion may be provided on a side of the base 2112 and on a side close to the bottom ink tank 1 so as to supply the bottom ink to the bottom ink tank 1; the third and fourth mounting portions are provided on the side of the base 2112 away from the bottom ink tank 1 so as to communicate with an external air source.

Further, the first mounting portion may be a through hole provided on the cover 2114, the through hole communicating with the tank 2113 and being threadedly coupled to the first inlet 231, so that the first inlet 231 communicates with the tank 2113; the second mounting part is a through hole arranged at one side of the base 2112, the through hole is communicated with the tank 2113 and is connected with the oil outlet 2111 through threads or welding, and the through hole and the tank 2113 can be communicated through an oil guide pipeline which is arranged in the base 2112 in a penetrating way and is respectively communicated with the through hole and the tank 2113; the third installation part and the fourth installation part are through holes arranged on the other side of the base 2112, the two through holes are communicated through a transition pipeline, an electromagnetic valve can be arranged on the transition pipeline so as to automatically control the flow of the compressed air flowing into the air duct 234, and the two through holes can also be threaded holes so as to facilitate installation.

Additionally, to enable automated control, the oil supply assembly 211 may also include a control module 2116 and an ink volume detector 2115. As shown in fig. 4, the ink amount detector 2115 is disposed at the bottom of the tank 2113, the control module 2116 includes a display operation panel and a main control module, the display operation panel is disposed on one side of the base 2112, and the main control module is disposed in the base 2112. The display operation panel comprises a display screen and a manual operation button so as to check the operation parameters of the base oil printing device and realize manual operation. The main control module is electrically connected with the electromagnetic valve, the display operation panel and the ink amount detector 2115, and the electromagnetic valve is controlled to regulate the delivery of compressed air, so that the functions of automatic shutdown, starting and flow regulation are realized, and the oil injection speed is further regulated; the oil storage amount is monitored by an ink amount detector 2115, and an oil amount parameter is fed back and displayed on a display operation panel, wherein the ink amount detector 2115 can be a liquid level measuring instrument; the running conditions such as ink quantity, air flow, ink injection speed and the like can be checked in real time through the display operation panel.

According to the structure of the oil supply assembly 211, the oil supply principle of the oil supply module 21 is as follows: after the air outlet 232 installed at one side of the base 2112 is communicated with the first air inlet 231 on the cover 2114 through the air duct 234, the air outlet 232 and the first air inlet 231 are connected in series, the flow rate of the compressed air flowing into the air duct 234 from the air outlet 232 is Q1, and the flow rate of the compressed air entering the ink tank 2113 from the first air inlet 231 is theoretically the same as Q1 through the transportation of the air duct 234, so that the air pressure of the first air inlet 231 is theoretically the same as the air pressure of the air outlet 232. The second air inlet 233 is communicated with an external air source, the flow rate of the compressed air entering the base 2112 from the second air inlet 233 is Q2, Q2 is more than or equal to Q1, the flow rate of the compressed air is regulated by the control module 2116 and the electromagnetic valve, the compressed air enters the oil supply assembly 211 at the flow rate of Q1, and the bottom oil is pressed out of the oil outlet 2111 at a corresponding speed under corresponding air pressure.

Specifically, the adjustment process of the oiling speed comprises the following steps: in the first step, when the spreading width of the base oil on the inking sub-area 111 or the ink guide channel 41 reaches half of the width of the inking sub-area 111 or the ink guide channel 41, the oil supply is suspended, and the shutdown operation may be to close the electromagnetic valve by the control module 2116 so that the compressed gas does not enter the tank 2113 any more, or to cut off the external gas source so that the oil supply module 21 is in the oil suspension stage. At this time, the ink state of the base ink can be observed, so that the base ink can be adjusted in time to meet the requirement of printing quality. Secondly, after the bottom oil state is determined to meet the requirement, the oil supply module 21 is started again, the flow regulating button on the display operation panel is manually operated, the opening degree of the electromagnetic valve is controlled through the control module 2116, so as to regulate the flow of the compressed gas flowing out from the gas outlet 232, the flow needs to be ensured to be rapidly increased to the state that the bottom oil is about to flow out from the output port of the oil outlet nozzle 2122, then the flow of the compressed gas is slowly and manually operated to be increased to the standard flow, the standard flow is based on that the spreading distance of the bottom oil on the inking subarea 111 or the ink guide channel 41 is close to the width of the inking subarea 111 or the ink guide channel 41, and the bottom oil is not continuously expanded and keeps stable, at the moment, the consumption of the bottom oil flowing out from the output port of the oil outlet nozzle 2122 and the bottom oil transferred to the pattern subarea 1011 of the printing stock 10 by the lower ink roller 3 reach dynamic balance, the standard flow is set as a stable output value, the manual control state is exited and the automatic control state of the oil feed module 21 is switched to until printing is completed.

In addition, to ensure that the ink is printed more uniformly on the substrate 10, it is often necessary to use a vibrator train. In this embodiment, in order to ensure that the base ink printing is more uniform, the oscillating stroke L of the oscillating roller of the base ink printing apparatus needs to be adjusted before the base ink printing. Because the oscillating stroke L is such that the oscillating roller performs the reciprocating oscillating motion of the distance L along the center axis while completing the rotation along the center axis, the base oil transferred from the lower ink roller 3 is more uniformly distributed on the oscillating roller. When the spreading width of the base oil in the base oil ink tank 1 is d, and the base oil is transferred to the oscillating roller through the lower ink roller 3, if the oscillating roller only rotates along the central shaft, the spreading width of the base oil on the oscillating roller is also d, but the oscillating roller can do oscillating motion with the oscillating stroke of L while rotating, so that the spreading width of the base oil on the oscillating roller can also be expanded to d ', d' comprises the original spreading width of d, and the base oil can respectively extend L distances leftwards and rightwards along the central shaft direction, namely, the actual spreading width of the base oil on the oscillating roller is d + 2L.

To ensure that no overlap occurs between different base inks, the distance D between two adjacent pattern sub-areas 1011 or two adjacent ink guide channels 41 in the base ink tank 1 should satisfy: d is not less than 2L. Specifically, when 2L is equal to D, the pattern sub-areas 1011 printed on the printing material 10 by the two adjacent base inks after the oscillating of the oscillating roller just meet without overlapping; when 2L < D, the pattern sub-areas 1011 printed on the printing stock 10 by the two adjacent base oils after the oscillating of the oscillating roller do not contact, and have the interval of the distance of D-2L, so that the effect of arranging a plurality of mutually separated pattern sub-areas 1011 on the same pattern area 101 can be met. Preferably, the cross-travel L is 0-10mm, more preferably L-10 mm.

According to the structure of the base oil printing device, the corresponding base oil printing process comprises the following process steps:

s01, injecting a plurality of types of base oil into the plurality of oil supply modules 21 of the oil supply mechanism 2, where each oil supply module 21 corresponds to one type of base oil;

s02, adjusting the serial stroke L of the ink serial roller group of the bottom oil printing device;

s03 simultaneously prints a base ink on a plurality of pattern sub-areas 1011 of the substrate 10 corresponding one-to-one to the plurality of inking sub-areas 111. In this embodiment, for a printing material 10, a pattern area 101 is provided, and three pattern sub-areas 1011 are linearly arranged on the pattern area 101, the primer printing process includes the following steps:

s01, three types of bottom oil are respectively injected into the three oil supply modules 21 of the oil supply mechanism 2, and each oil supply module 21 corresponds to one type of bottom oil;

s02, adjusting the serial stroke L of the ink serial roller group of the bottom oil printing device;

s03 prints the top coats a, b, and c simultaneously on the three pattern sub-areas 1011 of the substrate 10 corresponding one-to-one to the three inking sub-areas 111.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (11)

1. A bottom ink printing device comprises a bottom ink tank (1) and is characterized in that,

the bottom ink tank (1) comprises at least one group of inking zones (11), each group of inking zones (11) comprises a plurality of inking subareas (111), the inking subareas (111) are arranged along the length direction of the bottom ink tank (1) and correspond to a plurality of pattern subareas (1011) of a printing stock (10) in a one-to-one mode, and bottom ink is printed on the pattern subareas (1011) simultaneously;

the base oil printing device further comprises an oil supply mechanism (2), the oil supply mechanism (2) comprises a plurality of oil supply modules (21), each oil supply module (21) comprises an oil supply assembly (211) and an oil pipe part (212), each oil supply assembly (211) is arranged on one side of the base oil ink tank (1), a closed space is formed in each oil supply assembly (211), and each closed space is configured to store the base oil; one end of the oil delivery pipe part (212) is communicated with the oil supply assembly (211), the other end of the oil delivery pipe part (212) is an output port, the output ports are arranged in one-to-one correspondence with the inking subareas (111), and the output port is configured to supply bottom oil to the corresponding inking subarea (111) of each group of inking subareas (11);

the bottom oil printing device further comprises an ink distributing roller set, the distance between every two adjacent inking subareas (111) is D, the serial stroke of the ink distributing roller set is L, and D is larger than or equal to 2L.

2. The base ink printing apparatus according to claim 1, wherein said oil supply unit (211) is provided with a plurality of oil outlets (2111) communicating with said closed space, and each of said oil outlets (2111) communicates with one of said oil delivery pipe portions (212).

3. The base ink printing apparatus according to claim 1, wherein the oil supply mechanism (2) further comprises:

the ink guide beam (22) extends along the length direction of the bottom ink tank (1) and is arranged above the bottom ink tank (1), and one end, far away from the oil supply assembly (211), of the oil conveying pipe part (212) is movably arranged on the ink guide beam (22).

4. The primer printing device according to claim 3, wherein the manifold portion (212) includes:

a connection hose (2121), one end of the connection hose (2121) being detachably connected to the oil supply unit (211); and

the oil outlet spray pipe (2122) is communicated with the connecting hose (2121), and the oil outlet spray pipe (2122) is movably arranged on the ink guide beam (22).

5. The primer printing device according to claim 4, wherein a plurality of movable connecting portions (221) are arranged on the ink guide beam (22) along the length direction, the connecting portions (221) are connected with the oil outlet nozzles (2122) in a one-to-one correspondence manner, and the connecting portions (221) are configured to drive the oil outlet nozzles (2122) to move and enable the oil outlet nozzles (2122) to stop at the ink guide beam (22).

6. The base ink printing device according to claim 5, wherein the ink guide beam (22) is provided with a sliding groove (222) along a length direction, and each connecting portion (221) is slidably connected with the sliding groove (222).

7. The base ink printing apparatus according to any one of claims 2 to 6, wherein the oil supply mechanism (2) further includes:

air feed portion (23), air feed portion (23) with oil supply unit (211) are linked together, air feed portion (23) are configured as to airtight space carries compressed air, so that the bottom oil in oil supply unit (211) by delivery pipe portion (212) are exported.

8. The base ink printing apparatus according to any one of claims 1 to 6, wherein the bottom of the base ink tank (1) includes an inclined surface provided so as to be inclined downward toward a direction close to the lower ink roller (3) in the base ink tank (1), the inclined surface being configured to guide the base ink to run along the bottom of the base ink tank (1) toward the lower ink roller (3) side.

9. The base ink printing apparatus according to claim 8, further comprising:

lead inking pad (4), lead inking pad (4) set up in the tank bottom of bottom ink groove (1), it leads ink runner (41) to be provided with a plurality of on inking pad (4), every to lead ink runner (41) with go up inking subregion (111) one-to-one setting, it is configured to guide to lead ink runner (41) the bottom ink orientation ink roller (3) side trickles down.

10. A base printing process using the base printing apparatus as claimed in any one of claims 1 to 9, comprising the steps of:

s01, injecting various types of bottom oil into a plurality of oil supply modules (21) of the oil supply mechanism (2), wherein each oil supply module (21) corresponds to one type of bottom oil;

s02, adjusting the serial stroke L of the ink serial roller group of the bottom oil printing device;

s03, printing the base oil on a plurality of pattern sub-areas (1011) of the printing stock (10) which correspond to the plurality of inking sub-areas (111) in a one-to-one mode.

11. The base ink printing process according to claim 10, wherein the spacing D between two adjacent inking subregions (111), the serial stroke L of the serial ink roller group adjusted in the step S02 satisfies: d is not less than 2L.

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