CN211843580U

CN211843580U - UV printing ink intermittent offset press for roll paper flexible resin plate

Info

Publication number: CN211843580U
Application number: CN202020349813.2U
Authority: CN
Inventors: 朱长民; 郑小康; 石祖才
Original assignee: Chongqing Hongjin Printing Co ltd
Current assignee: Chongqing Hongjin Printing Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-03
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a roll web flexonics version UV printing ink intermittent type formula offset press, including at least one first printing unit, first printing unit includes first ink fountain, first ink transfer mechanism, first plate cylinder, first blanket cylinder and first impression cylinder, the one end of first ink transfer mechanism is located the ink outlet of first ink fountain, the other end and first plate cylinder butt, the space of a whole page of first plate cylinder is the flexonics version, and the printing picture and text part of flexonics version is higher than the blank part, first plate cylinder is to rolling with first blanket cylinder crimping, first blanket cylinder is to rolling with first impression cylinder crimping. The utility model discloses in, adopt the flexible resin version as the plate cylinder space of a whole page, realized the waterless offset printing of web intermittent type formula UV printing ink, the colour that appears because of the participation of water bucket liquid when having solved the printing is unstable with paste the version problem, reduced manufacturing cost to reduce harmful substance's emission, application prospect is extensive.

Description

UV printing ink intermittent offset press for roll paper flexible resin plate

Technical Field

The utility model relates to a web printing field, in particular to web flexible resin version UV printing ink intermittent type formula offset press.

Background

The multi-color set web intermittent UV ink offset press has the characteristics of low plate making cost, high plate making efficiency, high proofing production reflecting speed and the like, and is widely applied to the label industry. In the traditional label industry, the equipment width is basically below 450MM due to the limitations of the capacity of processing equipment and the production process after die cutting. With the research, development and popularization of large-format intermittent UV ink offset presses in recent years, the printing and packaging industry gradually rises and applies, and the application range is gradually widened.

The multi-color group web intermittent UV ink offset press is a machine set type, a modularized printing device, each color set corresponds to a printing machine set, the mechanical structure of the printing machine set is similar to that of a single-sheet paper offset press, but the multi-color group web intermittent offset press needs to complete printing registration among the color sets, a tension control system is added, a paper deviation rectifying system, an independent servo motor control system of the printing machine set and a UV curing system are added, in order to save materials, the machine set moves through the machine sets among the machine sets, the registration of the circumferential directions of plates among different color sets and the seamless butt joint of the patterns among the circumferential directions of the plates are solved, meanwhile, a plate cylinder can realize transverse movement, the problem of transverse registration is solved, the machine set is limited to the reason of the registration precision, the multi-color group web intermittent UV ink offset press adopts each set of curing, and a wet-dry printing mode.

The multi-color set roll paper intermittent uv printing ink offset press is widely applied in the label industry, most of products based on labels are made of non-setting adhesive materials, waste discharge edges exist among patterns due to the die cutting production process, the patterns are discontinuous, and color difference among the patterns is not easy to show. With the application of the large-format multicolor-group bobbin paper intermittent UV ink offset press on packaging products, particularly on cigarette packet color positioning frame paper, because the patterns are continuous, color deviation between a seam and a plate tail pattern in one plate circumference is obvious, and meanwhile, when an offset printing reverse process is used, the problem that the plate is easily pasted by base oil cannot be effectively solved, and the problems of color difference and pasting are difficult to solve in the whole industry.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an adopt the roll web flexible resin version UV printing ink offset press of the forme cylinder version material of flexible resin version as printing unit.

The technical scheme of the utility model as follows:

the UV ink intermittent offset press for the web flexible resin plate comprises at least one first printing unit, wherein the first printing unit comprises a first ink duct, a first ink transfer mechanism, a first printing plate cylinder, a first rubber cylinder and a first impression cylinder, one end of the first ink transfer mechanism is positioned at an ink outlet of the first ink duct, and the other end of the first ink transfer mechanism is abutted against the first printing plate cylinder and used for uniformly transferring ink in the first ink duct to the surface of a page of the first printing plate cylinder; the printing plate comprises a first plate cylinder, a first rubber cylinder, a first impression cylinder and a second plate cylinder, wherein the printing surface of the first plate cylinder is a flexible resin plate, the printing image and text part of the flexible resin plate is higher than the blank part, the first plate cylinder is in press-connection butt-rolling with the first rubber cylinder and used for conveying ink to the first rubber cylinder, and the first rubber cylinder is in press-connection butt-rolling with the first impression cylinder and used for printing the ink on a printing stock.

Further, the flexible resin plate is an aluminum-based flexible resin plate and comprises an aluminum plate base layer and a flexible resin layer.

Further, the total thickness of the flexible resin plate is 0.4-0.45mm, wherein the thickness of the flexible resin layer is 0.2-0.25 mm.

Further, the first ink transfer mechanism comprises a first ink duct roller and at least one first ink form roller, the first ink duct roller is positioned at an ink outlet of the first ink duct, and each first ink form roller is pressed against the first plate cylinder; a plurality of first inking rollers are arranged between the first ink fountain roller and the at least one first ink form roller, and after the first ink fountain roller transfers the ink to the first pressing connection ink roller, the ink is spread evenly by mutual rolling and separation of the plurality of first inking rollers and then transferred to the first ink form rollers, and finally the ink is transferred to the first plate cylinder by the first ink form rollers.

Further, the web flexographic printing UV ink intermittent offset press also comprises at least one second printing unit, wherein the second printing unit comprises a second ink duct, a second ink transfer mechanism, a second plate cylinder, a second blanket cylinder, a second impression cylinder and a water path system; the waterway system is used for adding fountain solution to the non-printing image-text part of the second printing plate cylinder, one end of the second ink transmission mechanism is positioned at the ink outlet of the second ink duct, and the other end of the second ink transmission mechanism is abutted against the second printing plate cylinder and is used for uniformly transmitting the ink in the second ink duct to the plate surface of the second printing plate cylinder; and the second plate cylinder and the second rubber cylinder are in press-connection and butt-rolling to be used for transferring the ink to the second rubber cylinder, the printing surface of the second plate cylinder is a common offset printing plate, and the second rubber cylinder and the second impression cylinder are in press-connection and butt-rolling to be used for printing the ink on a printing stock.

Further, the second ink transfer mechanism comprises a second ink duct roller and at least one second ink form roller, the second ink duct roller is positioned at an ink outlet of the second ink duct, and each second ink form roller is pressed against and rolled with the second plate cylinder; and a plurality of second ink form rollers are arranged between the second ink fountain roller and the at least one second ink form roller, after the second ink fountain roller transfers the ink to the second ink form roller in a pressing connection mode, the ink is spread uniformly by mutual rolling and separation of the second ink form rollers and then transferred to the second ink form rollers, and finally the ink is transferred to the second printing plate cylinder by the second ink form rollers.

Further, the first printing unit is used for printing solid colors, and the second printing unit is used for printing fine dots.

Has the advantages that: in the utility model, the flexible resin plate is adopted as the plate cylinder plate surface of the printing unit, and the special printing ink for the traditional flexible plate printing is not needed, thereby realizing the web intermittent UV printing ink waterless offset printing; by changing the printing mode, fountain solution (consisting of fountain solution, alcohol and water) is not needed to be used in the printing process, the concept of ink balance is not available, the problems of unstable color and plate pasting caused by the participation of the fountain solution in printing are solved, the inking amount is stable, and the effect of the product is more stable when the ink is used for large-impression printing; in addition, because the fountain solution is not involved, the use amount of the printing ink is reduced, fountain solution and alcohol are not needed, the problem that the fountain solution is acidic and can corrode the rubber roller is solved, the service life of the rubber roller is prolonged, the production and manufacturing cost is reduced, the emission of harmful substances is greatly reduced, and the application prospect is wide.

Drawings

FIG. 1 is a schematic view of a first printing unit;

FIG. 2 is a front mosaic of a flexible resin plate;

FIG. 3 is a cross-sectional view of a flexographic plate;

FIG. 4 is a schematic view of the perforation of a flexographic plate;

fig. 5 is a schematic view of the combined printing of the first printing unit and the second printing unit.

In the figure, 11, a first ink fountain, 12, a first ink fountain roller, 13, a first ink form roller, 14, a first ink train roller, 15, a first plate cylinder, 16, a first blanket cylinder, 17, a first impression cylinder, 21, a second ink fountain, 22, a second ink fountain roller, 23, a second ink form roller, 24, a second ink train roller, 25, a second plate cylinder, 26, a second blanket cylinder, 27, a second impression cylinder, 28, a water path system, 151, an aluminum plate substrate, 152, a flexible resin layer, 153, a printing text portion, 154, a blank portion.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1

As shown in fig. 1, one embodiment of the present invention includes at least one first printing unit comprising a first ink fountain 11, a first ink transfer mechanism, a first plate cylinder 15, a first blanket cylinder 16, and a first impression cylinder 17; the first ink transfer mechanism is used for uniformly transferring ink in the first ink fountain 11 to the surface of a first plate cylinder 15, the first plate cylinder 15 is in press-contact butt joint with a first rubber cylinder 16 and used for transferring the ink to the first rubber cylinder 16, and the first rubber cylinder 16 is in press-contact butt joint with a first impression cylinder 17 and used for printing the ink on a printing stock.

The first ink transfer mechanism comprises a first ink fountain roller 12 and at least one first ink form roller 13, in the present embodiment, four first ink form rollers 13 are preferably provided; the first ink fountain roller 12 is positioned at an ink outlet of the first ink fountain 11, and the four first inking rollers 13 are pressed against and roll against the first plate cylinder 15; between said first ink fountain roller 12 and the four first form rollers 13, a plurality of first ink form rollers 14 are provided, in this embodiment preferably twelve first ink form rollers 14 are provided, although less than twelve or more than twelve first ink form rollers 14 may be provided depending on the actual requirements of the product; after the first ink fountain roller 12 transfers the ink to the first ink form roller 14 which is pressed, the ink is spread evenly by the mutual rolling and separation of the twelve first ink form rollers 14, then transferred to the four first ink form rollers 13, and finally transferred to the first plate cylinder 15 by the four first ink form rollers 13. The flexible resin layer is convenient for drilling mounting holes and accurate positioning and mounting, is matched with UV ink, and meets the requirements of ink on the surface attachment of the plate and the requirement of transferring the ink from the plate to a printing stock; therefore, the UV ink of the existing offset press can be used for printing, and the special ink for flexographic printing is not needed, so that the raw material cost is greatly reduced; for example, the flexible resin layer may be made of a german basf NS73, which is mainly composed of polyvinyl alcohol and a polyurethane system.

The plate surface making process of the first plate cylinder 15 is as follows:

as shown in fig. 2, a production makeup process is formulated according to production process requirements, and the makeup number and the makeup circumference size of the flexible resin plate are determined to obtain a front makeup plate of the flexible resin plate;

as shown in fig. 3, an aluminum plate making base layer 151 and a flexible resin layer 152 are used to make a flexible resin plate, and after the flexible resin plate is made, the total thickness of the flexible resin plate is 0.4-0.45mm, preferably 0.45mm, and is matched with the parameters of the existing offset press printing unit, so that the surface linear velocity of the first printing unit can be ensured to be the same as that of the existing offset press printing unit; the thickness of the flexible resin layer is 0.2-0.25mm, preferably 0.2 mm.

Carving or burning the flexible resin plate by adopting a laser carving or iodine lamp burning mode according to the front splicing plate of the flexible resin plate, so that the printing image-text part 153 of the flexible resin plate is higher than the blank part 154 (namely the non-printing image-text part);

as shown in fig. 4, mounting holes are punched in the prepared flexographic plate according to the positions of the plate surface positioning holes on the first plate cylinder 15;

the punched flexographic plate is mounted on the first plate cylinder 15.

Because the surface of the first plate cylinder adopts the flexible resin relief printing plate, the ink transmitted by the first ink roller 13 is only positioned on the printing image-text part 153, the blank part 154 can be prevented from inking without using a water channel system and a fountain solution (consisting of fountain solution, alcohol and water), the concept of water-ink balance is not provided, the problems that the ink is emulsified when the ink is large in water and the color is light in the traditional offset printing, the ink is inked to cause plate pasting when the ink is large in water are solved, and particularly, the problem that the ink is not easy to perceive after the plate pasting because the bottom oil is transparent ink when the printing is large in impression is solved.

In addition, because intermittent type formula offset press adopts the printing mode that advances three and move back one, adopts the roll web mode of pullback, realizes that a version week pattern and next version week end to end accomplish continuous pattern seamless concatenation, traditional offset press is because the ink balance needs a process, and the start needs a period to the colour stability, leads to the printing ink loss more, and the colour is stable slow, produces the colour difference easily, and the utility model discloses owing to there is not the participation of water, the inking is even, obvious colour difference can not appear, the hue of product is stable, the qualification rate is high.

Example 2

As shown in fig. 5, another embodiment of the present invention includes at least one first printing unit and at least one second printing unit, the first printing unit having the same structure as that of embodiment 1; the second printing unit comprises a second ink duct 21, a second ink transfer mechanism, a second plate cylinder 25, a water path system 28, a second blanket cylinder 26 and a second impression cylinder 27; the second ink transfer mechanism is used for uniformly transferring the ink in the second ink duct 21 to the printing surface of a second plate cylinder 25, and the printing surface of the second plate cylinder 25 is a common offset printing plate (such as a CTP plate adopting a laser thermosensitive plate); the water channel system 28 is used for adding a fountain solution to the non-printing image-text part of the second plate cylinder 25 to form a water-ink balance on the printing surface of the second plate cylinder 25, the second plate cylinder 25 is in press-contact with the second blanket cylinder 26 for transferring ink to the second blanket cylinder 26, and the second blanket cylinder 26 is in press-contact with the second impression cylinder 27 for printing ink on a printing material.

The second ink transfer mechanism includes a second ink fountain roller 22 and at least one second ink form roller 23, and in the present embodiment, four second ink form rollers 23 are preferably provided; the second ink fountain roller 22 is positioned at an ink outlet of the second ink fountain 21, and the four second ink form rollers 23 are pressed against the second plate cylinder 25; a plurality of second oscillating rollers 24 are provided between the second ink fountain roller 22 and the four second form rollers 23, and in the present embodiment, twelve second oscillating rollers 24 are preferably provided; after the second ink fountain roller 22 transfers the ink to the second oscillating roller 24 which is pressed, the ink is spread evenly by mutual rolling and separation of twelve second oscillating rollers 24, then transferred to the four second ink form rollers 23 respectively, and finally transferred to the second plate cylinder 25 by the four second ink form rollers 23.

According to actual printing needs, the web UV ink offset press of the multi-color group can adopt a first printing unit for all printing units, also can adopt a first printing unit for part of the printing units, and adopts a second printing unit for the rest of the printing units, so as to obtain better printing effect.

Of course, the utility model discloses an embodiment still includes unwinding mechanism, unreels drive mechanism, feeding buffer gear, feeding drive mechanism, ejection of compact buffer gear, rolling drive mechanism, winding mechanism and devices such as UV solidification equipment, and these are all unanimous with prior art's intermittent type formula offset press, do not do here and give unnecessary details.

The utility model discloses also can obtain through the repacking of current roll web UV printing ink intermittent type formula offset press, the water route system in the printing unit of disconnection or take off current offset press to the space of a whole page that will print the plate cylinder in the printing unit more change the utility model discloses a flexible resin version to it can to adjust the biography china ink volume of passing black mechanism.

The utility model discloses do not describe the part unanimously with prior art, do not describe herein any more.

The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.

Claims

1. The UV ink intermittent offset press for the web flexible resin plate is characterized by comprising at least one first printing unit, wherein the first printing unit comprises a first ink duct, a first ink transfer mechanism, a first plate cylinder, a first blanket cylinder and a first impression cylinder, one end of the first ink transfer mechanism is positioned at an ink outlet of the first ink duct, and the other end of the first ink transfer mechanism is abutted against the first plate cylinder and used for uniformly transferring ink in the first ink duct to the page of the first plate cylinder; the printing plate comprises a first plate cylinder, a first rubber cylinder, a first impression cylinder and a second plate cylinder, wherein the printing surface of the first plate cylinder is a flexible resin plate, the printing image and text part of the flexible resin plate is higher than the blank part, the first plate cylinder is in press-connection butt-rolling with the first rubber cylinder and used for conveying ink to the first rubber cylinder, and the first rubber cylinder is in press-connection butt-rolling with the first impression cylinder and used for printing the ink on a printing stock.

2. The web flexographic UV ink intermittent offset printing press as recited in claim 1 wherein the flexographic plate is an aluminum-based flexographic plate comprising an aluminum plate base layer and a flexographic resin layer.

3. The UV ink intermittent offset printing press for the web flexible resin plate as claimed in claim 2, wherein the total thickness of the flexible resin plate is 0.4-0.45mm, and wherein the thickness of the flexible resin layer is 0.2-0.25 mm.

4. The web flexographic UV ink intermittent offset printing press as recited in claim 1 wherein the first transfer mechanism comprises a first fountain roller positioned at the ink outlet of the first fountain and at least one first form roller, each first form roller being in pressure-to-roller engagement with the first plate cylinder; a plurality of first inking rollers are arranged between the first ink fountain roller and the at least one first ink form roller, and after the first ink fountain roller transfers the ink to the first pressing connection ink roller, the ink is spread evenly by mutual rolling and separation of the plurality of first inking rollers and then transferred to the first ink form rollers, and finally the ink is transferred to the first plate cylinder by the first ink form rollers.

5. The web flexographic UV ink intermittent offset printing press as recited in any one of claims 1-4 further comprising at least a second printing unit, said second printing unit comprising a second ink fountain, a second ink transfer mechanism, a second plate cylinder, a second blanket cylinder, a second impression cylinder, and a water path system; the waterway system is used for adding fountain solution to the non-printing image-text part of the second printing plate cylinder, one end of the second ink transmission mechanism is positioned at the ink outlet of the second ink duct, and the other end of the second ink transmission mechanism is abutted against the second printing plate cylinder and is used for uniformly transmitting the ink in the second ink duct to the plate surface of the second printing plate cylinder; and the second plate cylinder and the second rubber cylinder are in press-connection and butt-rolling to be used for transferring the ink to the second rubber cylinder, the printing surface of the second plate cylinder is a common offset printing plate, and the second rubber cylinder and the second impression cylinder are in press-connection and butt-rolling to be used for printing the ink on a printing stock.

6. The web flexographic UV ink intermittent offset printing press as recited in claim 5 wherein the second ink transfer mechanism comprises a second fountain roller and at least one second form roller, the second fountain roller positioned at the ink outlet of the second fountain, each of the second form rollers in pressure-facing contact with the second plate cylinder; and a plurality of second ink form rollers are arranged between the second ink fountain roller and the at least one second ink form roller, after the second ink fountain roller transfers the ink to the second ink form roller in a pressing connection mode, the ink is spread uniformly by mutual rolling and separation of the second ink form rollers and then transferred to the second ink form rollers, and finally the ink is transferred to the second printing plate cylinder by the second ink form rollers.

7. The web flexographic UV ink intermittent offset printing press as recited in claim 5 wherein the first printing unit is configured to print solid colors and the second printing unit is configured to print fine dots.