CN1907704A

CN1907704A - Indirect printing gravure apparatus

Info

Publication number: CN1907704A
Application number: CN 200610040940
Authority: CN
Inventors: 王元良
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-15
Filing date: 2006-08-15
Publication date: 2007-02-07

Abstract

The invention relates to an indirect printing concave printer, which comprises an ink device, a concave roller and a compressing roller. And it is characterized in that: a soft flexible transfer roller is mounted between the compressing roller and the concave roller; the ink inside the groove of concave roller is first transferred to the transfer roller, to print the object, while the printed pattern and word are clear, and the ink is uniform, to be used in any package.

Description

Indirect printing gravure apparatus

(1) technical field: the invention belongs to printing machinery, be specifically related to intaglio printing machinery.

(2) background technology: the structural representation of existing direct printing gravure apparatus as shown in Figure 1: it roller platen 1,4 and 2 that comprises the soft surface of the gravure roll 3 of hard surface and tangent connection is respectively its roll shaft.Stock 10 is transmitted by delivery roll 11,12, between gravure roll 3 and roller platen 1.During work, gravure roll 3 is by its roll shaft 4 driven rotary, 6 pairs of gravure roll of printing ink in the ink tank 53 are carried out inking, scraper 8 scrapes off the outer printing ink of gravure roll roll surface upper groove, printing ink in the gravure roll roll surface upper groove is under the pressurization of roller platen 1, directly be transferred on the surface of

stock

10,9 for installing the blade shaft of scraper 8 among Fig. 1.

Pattern by above-mentioned direct printing gravure apparatus printing has advantages such as printing ink is abundant, bright in luster, the gravure roll printing life-span is long, is widely used in fields such as packages printing.Because gravure roller surface is the hard roller, there is certain limitation in above-mentioned gravure apparatus to the stock 10 that is fit to printing, for example it is not suitable for printing hard sheet packing material (as metal film or thin metal coiled material) or shaggy paper (as dixie cup paper), printing ink in the gravure roller surface upper groove can not cause disadvantages such as the blur margin that printed patterns or literal occur is clear, the regional area of pattern is fuzzy by uniform transfer printing to the surface of stock at this moment.

(3) summary of the invention: the objective of the invention is there is limitation in the stock that is fit to printing at above-mentioned direct printing gravure apparatus, when some stock of printing, the printing pattern or the literal blur margin is clear, the local fuzzy problem of pattern, a kind of indirect printing gravure apparatus is provided, it can solve the problems of the technologies described above, and its printing to various stocks has adaptability widely.

Technical scheme of the present invention is as follows:

Indirect printing gravure apparatus, it is constructed as follows: comprise an inking device, inking device and gravure roll are joined, and the roll surface position of corresponding gravure roll is equipped with the ink knife device; Also comprise a roller platen, be characterised in that between described roller platen and gravure roll transfer roll is installed that described transfer roll is connected with gravure roll is tangent, transfer roll is connected by stock and roller platen are tangent.Described transfer roll is connected and composed by roll shaft and soft flexible transfer printing layer.

Among the present invention, between described roller platen and the gravure roll transfer roll is installed, stock is between transfer roll and the roller platen, and printing ink is transferred on the transfer roll by gravure roll, under the effect of roller platen, the printing ink on the transfer roll again trans-printing on stock.Because transfer roll is connected and composed by roll shaft and soft flexible transfer printing layer, during printing, the printing ink in the gravure roll roll surface upper groove is easy to evenly be transferred on the soft flexible transfer printing layer of transfer roll on the one hand, effectively improves the uniformity of printing-ink and color; On the other hand, the printing ink on the soft elasticity transfer roll also is easy to evenly be transferred on the stock, even stock is rough surface or hard metal sheet-material package thing surface, also is like this.Reason based on above-mentioned two aspects, thereby make the pattern or the literal edge clear that are printed on the stock, the local fuzzy shortcoming of pattern is eliminated, and the pattern of printing or literal abundant, the bright advantage of printing ink that can keep and improve direct printing gravure to have.

The present invention is improved to indirect type or transfer-type gravure apparatus with the direct-type gravure apparatus, and its stock to unlike material has adaptability widely, and the printing ink of hectographic printing is abundant, bright in luster, and evenly.

(4) description of drawings:

Fig. 1 is the structural representation of direct printing gravure apparatus;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is the schematic diagram of the embodiment of the invention 1;

Fig. 4 is the schematic diagram of the embodiment of the invention 2.

(5) specific embodiment:

Embodiment 1:

See Fig. 2, Fig. 3, inking device of the present invention comprises ink reservoir 7, and device printing ink 8,9 is for placing the Ink stirring stick of printing ink in it.Inking device and gravure roll 5 are joined, and gravure roll shown in Fig. 2 or Fig. 35 immerses ink reservoir 7, and along with the rotation of gravure roll 5, printing ink 8 is adhered on the roll surface of gravure roll 5.Also can install an inking roller that immerses ink reservoir 7 additional, printing ink is adhered on the gravure roll 5 by this inking roller in the tangent connection in the bottom of gravure roll 5.Install by ink knife 10 the roll surface position of corresponding gravure roll 5, scrapes off the outer printing ink of gravure roll roll surface upper groove, and 11 for installing the blade shaft of scraper 10 among Fig. 2, Fig. 3.

See Fig. 2, Fig. 3, the present invention also comprises a roller platen 1, and the structure of roller platen 1 and material are identical with existing roller platen shown in Figure 1, and for example the surface is the rubber material.See Fig. 2, Fig. 3, between roller platen 1 and gravure roll 5 transfer roll 3 is installed,

transfer roll

3 and 5 tangent connections of gravure roll are seen Fig. 3, and transfer roll 3 is by stock 12 and 1 tangent connection of roller platen.Gravure roll 5 is installed on the bottom among Fig. 2, Fig. 3, and roller platen is installed on topmost.Transfer roll 3 among Fig. 2 or Fig. 3 is connected and composed by the transfer printing layer of roll shaft (or roller) and soft flexible rubber, resin or silica gel material, can adopt with prior art in the identical material and the preparation method of rubber, resin or silica gel material print roller make.The thickness of rubber, resin or silica gel transfer printing layer is by instructions for use design, typical desirable 3-6cm.

See Fig. 3, during apparatus of the present invention work, stock 12 is installed between transfer roll 3 and the roller platen 1, and 13 and 14 is the delivery roll of stock 12.When gravure roll 5 was rotated, printing ink 8 was adhered on its roll surface, and the printing ink in the printing ink outside scraper 10 scrapes off gravure roll 5 roll surface grooves, roll surface groove is transferred on the transfer roll 3, and under the effect of roller platen 1, the ink printing on the transfer roll 3 is to the reverse side of stock 12.After stock 12 printed through apparatus of the present invention, the treatment process and the equipment of back were same as the prior art.Prior art is adopted in electric driving of apparatus of the present invention and control.

As the embodiment of the invention, wherein transfer roll 3 is connected and composed by roll shaft and soft flexible rubber transfer printing layer, and wherein the rubber transfer printing layer adopts identical material of rubber print roller of the prior art and preparation method.Stock 12 is got the more coarse dixie cup paper in surface, adopts apparatus of the present invention shown in Figure 3 and uses and print dixie cup in the prior art and print with the printing ink of paper.Adopt visual method, pattern that hectographic printing goes out and literal edge clear, pattern area is clear, does not have local blooming, and the printing ink of pattern and literal is abundant, bright in luster, and evenly.

Embodiment 2:

See Fig. 4,1,3,5 still is roller platen, transfer roll and gravure roll among the figure, and each roller installation site is different with Fig. 3, and gravure roll 5 is installed on topmost, and roller platen 1 is installed on the bottom, and 2,4,6 are respectively its rotating shaft.Wherein transfer roll 3 is connected and composed by roll shaft and soft flexible resin transfer layer, and wherein the resin transfer layer adopts identical material of resin print roller of the prior art and preparation method.12 is stock, and 13,14 is its delivery roll.Embodiment illustrated in fig. 42 is different with 1 inking device embodiment illustrated in fig. 3, and ink reservoir 7 places gravure roll one side, and printing ink 11 is delivered to ink-spraying-head 10 through ink pumps, are sprayed onto on the roll surface of gravure roll 5, and 8 is ink knife, and 9 is the scraper installation shaft.Drop down onto in the ink reservoir 7 through the printing ink that scraper 8 scrapes, pump into ink-spraying-head 10 again, printing ink is recycled.Printing ink in the gravure roll 5 roll surface upper grooves is transferred to transfer roll 3, and under the effect of roller platen 1, the ink printing on the transfer roll 3 is to the front of stock 12.

In the present embodiment, stock 12 is got the packaging material of metal material---and the thin metal coiled material, adopt apparatus of the present invention shown in Figure 4 and use the printing ink of type metal coiled material in the prior art to print.Adopt visual method, pattern that hectographic printing goes out and literal to have also that edge clear, pattern area are clear, the technique effect of no local blooming, the printing ink of pattern and literal is abundant, bright in luster, and even.All the other explanations of present embodiment are identical with embodiment 1.

Claims

1, indirect printing gravure apparatus, it is constructed as follows: comprise an inking device, inking device and gravure roll are joined, and the roll surface position of corresponding gravure roll is equipped with the ink knife device; Also comprise a roller platen, be characterised in that between described roller platen and gravure roll transfer roll is installed that described transfer roll is connected with gravure roll is tangent, transfer roll is connected by stock and roller platen are tangent.

2, by the described indirect printing gravure apparatus of claim 1, be characterised in that described transfer roll is connected and composed by roll shaft and soft flexible transfer printing layer.

3, by the described indirect printing gravure apparatus of claim 2, be characterised in that described transfer roll is connected and composed by roll shaft and rubber transfer printing layer.

4, by the described indirect printing gravure apparatus of claim 2, be characterised in that described transfer roll is connected and composed by roll shaft and resin transfer layer.

5, by the described indirect printing gravure apparatus of claim 2, be characterised in that described transfer roll is connected and composed by roll shaft and silica gel transfer printing layer.