CN2918065Y

CN2918065Y - Flexible edition printing inking device

Info

Publication number: CN2918065Y
Application number: CN 200620079373
Authority: CN
Inventors: 张琳; 陈永常
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2006-07-13
Filing date: 2006-07-13
Publication date: 2007-07-04
Anticipated expiration: 2016-07-13

Abstract

The utility model relates to a flexible printing ink feeding device, two inking rollers which are a top roller and a rigid roller are added between an anilox roller and a plate cylinder, and make the original anilox roller and the plate cylinder change from a direct contact state to a separate state, and the anilox roller relatively rolls with the top roller of low net wire number and the rigid roller, and the rigid roller also relatively rolls with the anilox roller. When the ink is transported, first the quantitative ink in the ink groove is transported by the scraping blade and the anilox roller to the top roller, and then from the top roller to the rigid roller, finally from the rigid roller to the plate cylinder so that the inking up is realized. Through the flexible adjustment of the ink feeding quantity by the two inking rollers, the ink feeding quantity is under control and the quality of the printed matter is ensured. Besides, the ink feeding device avoids the direct contact of the anilox roller and the forme, the superposition of the lines of the ink feeding of the anilox roller with the forme network lines causes the moire phenomenon arising from optical interference.

Description

A kind of flexographic printing inking device

Technical field

The utility model relates to a kind of printing inking device, particularly a kind of flexographic printing inking device.

Background technology

In recent years, flexographic printing is applied in printing and the packaging industry more and more widely, what the common flexographic printing inking device adopted is anilox roll-doctor inking mechanism, and this device makes relative other mode of printing of the ink transfer route of flexo shorten greatly, and the ink transfer amount is accurate.But this mechanism also exists many shortcomings, for example, must strengthen the anilox roll screen density for duplicating high-quality printing, and screen density is big more, and then ink supply amount can sharply reduce, and this has just caused printing China ink layer flat, lack of contrast.Because anilox roll directly contacts with forme, can cause the lines of anilox roll ink transfer to overlap simultaneously, produce the interference of light and cause the moire phenomenon, influence print quality with the lines of forme netting twine.In addition, the screen density height has determined that the difficulty of processing of anilox roll is big, costs an arm and a leg.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and the flexographic printing inking device that a kind of ink transfer is even, improve print quality is provided.

For achieving the above object, the technical solution adopted in the utility model is: comprise anilox roll and plate cylinder, the anilox roll circumference is provided with doctor, also is provided with between anilox roll and plate cylinder and anilox roll and contacted rubber roll of plate cylinder and firm roller; Said anilox roll is the anilox roll of low screen density.

The utility model is adding two rider rollers between anilox roll and plate cylinder---and a rubber roll and a firm roller, rubber roll roll with just roller is relative with anilox roll respectively, and just roller is also relative with plate cylinder rolls.During the printing ink transmission, at first printing ink is quantitatively transferred to rubber roll, pass to firm roller from rubber roll again, realize inking thereby be transferred to plate cylinder by firm roller at last by anilox roll, doctor.By these two rider roller flexible modulation ink transfer amounts, make the ink transfer amount controlled, guarantee the quality of printing own.In addition, when this inking device had avoided anilox roll directly to contact with forme, the lines of anilox roll ink transfer overlapped the moire phenomenon that causes the interference of light and produce with the lines of forme netting twine.

Description of drawings

Accompanying drawing is an overall structure schematic diagram of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

Referring to accompanying drawing, the utility model comprises the anilox roll 3 and the plate cylinder 4 of low screen density, and anilox roll 3 circumference are provided with doctor 2, also is provided with between anilox roll 3 and plate cylinder 4 and anilox roll 3 and plate cylinder 4 contacted rubber rolls 5 and firm roller 6.The utility model adds two rider rollers between anilox roll 3 and plate cylinder 4---rubber roll 5 and firm roller 6, make original anilox roll 3 become released state from direct contact condition with plate cylinder 4, rubber roll 5 respectively with the anilox roll 3 and roller 6 relative rolling just of low screen density, firm roller 6 also with plate cylinder 4 relative rollings.During the printing ink transmission, at first the printing ink in the black groove 1 is quantitatively transferred to rubber roll 5, pass to firm roller 6 from rubber roll 5 again, realize inking thereby be transferred to plate cylinder 4 by firm roller 6 at last by doctor 2, anilox roll 3.

In this inking system, anilox roll 3 does not directly contact with plate cylinder 4 carries out inking, is that rubber roll 5 and firm roller 6 come ink transfer and even China ink and be to use two rider rollers.The anilox roll 3 of this inking system has adopted low screen density, so at first can reduce cost, though reducing, anilox roll 3 screen densities make that the ink transfer quantitative change is big, but owing to added two rider rollers, so can pass through these two rider roller flexible modulation ink transfer amounts, make the ink transfer amount controlled, guarantee the quality of printing own.In addition, when this inking device had avoided anilox roll 3 directly to contact with forme, the lines of anilox roll 3 ink transfers overlapped the moire phenomenon that causes the interference of light and produce with the lines of forme netting twine.

Adopt the utility model,, entire system structure and operability be there is no too big influence though black road slightly increases.In addition, rubber roll 5 and firm roller 6 prices own are lower, and have used the low screen density anilox roll that reduces cost, and are therefore little for the cost impact of single unit system.Flexographic printing generally adopts water-based inks, and itself just has the characteristics that viscosity is low, rate of drying is slow, therefore adopts the utility model also to need not to adjust or change printing ink.

Claims

1, a kind of flexographic printing inking device, comprise anilox roll (3) and plate cylinder (4), anilox roll (3) circumference is provided with doctor (2), it is characterized in that: also be provided with between anilox roll (3) and plate cylinder (4) and anilox roll (3) and contacted rubber roll of plate cylinder (4) (5) and firm roller (6).

2, the flexographic printing inking device according to claim 1 is characterized in that: said anilox roll (3) is the anilox roll of low screen density.