KR100392617B1 - an offset printing machine for thick sheet paper - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flatbed printing machine such as offset printing, and more particularly, to a flatbed printing machine using a PS plate to obtain a clear print quality such as photographs on a thick leaf paper such as corrugated paper.

The conventional technique of printing a thin lamination paper first and then laminating it on the corrugated cardboard as in the prior art adds a work process of attaching the thin lamination paper to the corrugated cardboard and uses a separate lamination paper. Such as discontinuation occurred.

Therefore, the present invention is to print directly on the surface of the thick paper (1) by the offset printing method using the PS plate (13a) capable of halftone printing, so that it is possible to realize a high-quality print as shown in the photo at the same time the size of the cardboard It is possible to print easily without being particular, and to minimize the work process required for the manufacture of the box, so that the box can be manufactured quickly and easily, thereby enhancing the external competitiveness of the agricultural product packaging box.

Description

An offset printing machine for thick sheet paper}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flatbed printing machine such as offset printing, and more particularly, to a flatbed printing machine using a PS plate on which a film is printed on an aluminum plate to obtain a clear print quality such as photographs on a thick paper such as corrugated paper. .

In general, the method of printing on thick thick paper, such as corrugated cardboard, is mainly applied to the embossed protrusion of the convex plate (resin plate or rubber plate) attached to the printing roller. It is a system that prints pictures or characters in the form of protrusions.

However, as described above, since the printing method using the convex plate is impossible to print a dot dot, it is impossible to implement high definition printing such as a photograph, and thus it is not possible to print various and complicated patterns on the cardboard for the box.

Therefore, a method of using a sheet of paper printed on corrugated paper after printing the surface paper by using a rotoprinting and offset printing method while transferring the thin paper wound on a roll has been proposed.

The conventional technique of printing the thin surface paper first and then laminating it to the corrugated cardboard adds the work process of adhering the thin surface paper to the corrugated cardboard and the use of a separate surface paper increases the manufacturing cost of the overall packaging box, thereby significantly reducing the external competitiveness. Closure of the back occurred.

In addition, according to the standard of agricultural products, when the packaging box of 10 kg or more is unfolded, the width thereof is 1,535 mm or more, and the width of the printing battery generally used is 1,090 mm, so that the width of the packaging box is larger than that of the battery. Could not print

Therefore, by dividing the surface paper into two pieces and then attaching and manufacturing the box, the series of work processes such as printing, gluing, cutting, bending, and fixing the needle are doubled, so the overall assembly work takes considerable time. The efficiency of was significantly lowered, and in particular the manufacturing process of the produce box could not be automated.

The present invention was devised in view of the above problems, and its object is to provide a high-quality print surface by directly printing a clear picture such as a photograph on the surface of a thick thick leaf paper, and the work process is simple to improve the external competitiveness of agricultural product packaging boxes. It is to provide a flatbed printing machine for thick leaf paper.

A feature of the present invention for achieving the above object is a PS plate which prints a film on an aluminum plate on the outer circumferential surface of the printing roller 13 which is rotated in contact with the plurality of ink rollers 11 and the water coating roller 12. A printing unit 10 on which a compression roller 15 is mounted at a lower portion of the rubber roller 14 which is mounted on the printing roller 13 and is in contact with the printing roller 13; The rear leaflets 1 are stacked inside the paper feed tray 21 mounted on one side of the printing unit 10 and supplied one by one through the outlet 22 on which the separator plate 22a is mounted by the operation of the pusher 23. A paper feeding unit 20; The feed rollers 31 installed on both sides of the press roller 15 are positioned at the outlet 22 side of the feed tray 21, and a plurality of guide rollers 32 are disposed on the feed roller 31. And a conveying part 30 on which the feed rollers 31 and the guide rollers 32 are respectively covered with belts 31a and 32a; One side of the transfer unit 30 is equipped with a discharge roller 33 is covered with a belt (33a), the one side is composed of a discharge unit 40 having a stacking box 41, the printed leaflet 1 is stored. It can be achieved by a flatbed printing machine for posterior leaf paper characterized by.

1 is a schematic device diagram illustrating an embodiment of the present invention;

Figure 2 is a perspective view illustrating one embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: posterior lobe

10: printing unit

11: ink roller

12: water coating roller

13: printing roller

13a: PS version

14: rubber roller

15: pressing roller

20: paper feeding unit

21: paper tray

22: exit

22a: Separator

23: push

30: transfer unit

31: paper feed roller

31a, 32a, 33a: belt

32: guide roller

33: discharge roller

40: discharge part

41: stacked

Hereinafter, described in detail by the accompanying drawings a preferred embodiment for achieving the above object is as follows.

1 to 2, a plurality of the ink rollers 11 and the water coating roller 12 is folded and rotated together on the upper side and one side of the outer circumferential surface of the printing roller 13.

On the outer circumferential surface of the printing roller 13, a PS plate 13a obtained by printing a film on an aluminum plate is mounted. The PS plate 13a is a plate in which a photoresist is pre-painted on a thin aluminum plate. The painting can be made precisely. The PS plate 13a can be stored for a long time without being relatively influenced by temperature and humidity, and the processing of the plate making process is simple and is widely used for high quality printing.

A rubber-coated rubber roller 14 is mounted below the outer circumferential surface of the printing roller 13 to rotate together with the printing roller 13, and a compression roller 15 is mounted at a lower portion of the rubber roller 14 at a predetermined interval. It is.

The above-described components serve as the printing unit 10 to transfer the ink so that printing is performed on the surface of the posterior leaf paper 1.

A paper feed tray 21 is mounted on one side of the printing unit 10, and the rear leaflets 1 are stacked inside the paper feed tray 21.

An outlet 22 having a separator plate 22a is formed at a lower portion of the tray 21, and a pusher 23 which is horizontally moved by power is mounted on the opposite side of the outlet 22. The posterior leaflet 1 located on the lowermost side of the side is pushed toward the outlet 22.

When the pusher 23 is operated, the posterior leaflet 1 positioned at the lowermost side is pushed by the pusher 23 and discharged one by one through the outlet 22. At this time, the separator 22a mounted at the outlet 22 is discharged. ) Is to be able to discharge the posterior leaflet 1 one by one by adjusting the interval of the outlet (22).

The above-described configuration serves as the paper feeding unit 20 of the rear leaf paper 1 to store the rear leaf paper 1 and draw out one by one.

A pair of paper feed rollers 31 are mounted on the outlet 22 side of the paper feed box 21 at a predetermined distance from each other, and a compression roller 15 is positioned between the paper feed rollers 31.

Outside the feed rollers 31 and the pressing rollers 15 are covered with a rear belt 1 conveying belt 31a.

A plurality of guide rollers 32 are mounted on an upper side of the paper feed roller 31, and a conveyance belt 32a is covered on the outside of the guide rollers 32 as well.

The above-described configuration serves as a transfer unit 30 for transporting the rear lobe 1 between the rubber roller 14 and the compression roller 15.

One side of the transfer unit 30 is equipped with a discharge roller 33 having a belt (33a), one side is provided with a stacking box 41 is stored printed leaflet (1).

The above-described configuration serves as a discharge unit 40 for transporting the printed posterior leaflet 1 and storing it in the lamination box 41.

According to the present invention having the above configuration, when the rear leaflet 1 located at the lowermost side of the paper tray 21 is discharged through the outlet 22 due to the operation of the pusher 23, the paper feed roller 31 and the guide roller 32 ) Is supplied between the conveying belts 31a and 32a respectively, and is conveyed between the rubber roller 14 and the pressing roller 15.

The conveyed leaflet 1 thus conveyed between the rubber roller 14 and the pressing roller 15 is printed on the surface of the leaflet 1 with a picture or a letter transferred to the rubber roller 14. That is, the ink roller 11 burys ink in the PS plate 13a mounted on the printing roller 13, and the water coating roller 12 pours water onto the PS plate 13a mounted in the printing roller 13. Ink buried in the form of a picture or a character imprinted on the PS plate 13a can be transferred to the rubber roller 14 and printed on the posterior leaf paper 1 passing between the rubber roller 14 and the pressing roller 15. It is.

The posterior leaflet 1 of which printing is completed as described above is stacked and stored in the stacking box 41 through the discharge roller 33.

Since the present invention described above is printed on the rear leaf paper 1 using the PS plate 13a capable of dot printing, the surface of the thick leaf paper 1, such as corrugated paper, can be realized at the same time as the picture with high definition. It is a direct printing on the advantage that the convenience of the work is greatly enhanced, the conventional problems caused by printing a separate surface paper and laminating it in the lamination paper is completely solved to maximize the efficiency of the work. .

Therefore, after printing high-quality printing on thick thick paper (1), such as corrugated cardboard, it is easy to produce agricultural product packaging box simply by going through cutting, banding, and iron fixing process. Minimizing and manufacturing boxes quickly can increase the external competitiveness of agricultural product packaging boxes.

In addition, by directly printing on the surface of the posterior leaflet 1, the printing can be performed regardless of the size of the posterior leaflet 1, thereby increasing the efficiency of the work, and supplying and transporting the posterior leaflet 1. All processes from printing to printing to storage are automatic, so factory automation can be achieved.

As described above, the present invention uses the PS plate 13a capable of halftone printing to directly print the surface of the posterior leaflet 1 in an offset printing method, so that high-quality printing such as photographs can be realized. At the same time, it is possible to print easily without regard to the size of the cardboard, and to minimize the work process required for the production of boxes, so that the box can be manufactured quickly and easily, thereby enhancing the external competitiveness of the agricultural product packaging box.

Claims (1)

On the outer circumferential surface of the printing roller 13 which is in contact with the plurality of ink rollers 11 and the water coating roller 12 and rotated, a PS plate 13a on which a film is printed on an aluminum plate is mounted, and the surface is folded on the printing roller 13. A printing part 10 having a compression roller 15 mounted on a lower portion of the rubber roller 14 that is rotated; The rear leaflets 1 are stacked inside the paper tray 21 mounted on one side of the printing unit 10 to supply one by one through the outlet 22 on which the separator plate 22a is mounted by the operation of the pusher 23. A paper feeding unit 20; The feed rollers 31 installed on both sides of the press roller 15 are positioned at the outlet 22 side of the feed tray 21, and a plurality of guide rollers 32 are disposed on the feed roller 31. And a conveying part 30 on which the feed rollers 31 and the guide rollers 32 are respectively covered with belts 31a and 32a; One side of the transfer part 30 is equipped with a discharge roller 33 covered with a belt 33a, and on one side thereof is discharged by a discharge unit 40 having a lamination box 41 in which printed posterior sheets 1 are stored. Flatbed printing machine, characterized in that configured.