JP3402491B2 - Ink pan for gravure rotary printing press - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an ink pan for a gravure rotary printing press. 2. Description of the Related Art A conventional ink pan will be described with reference to FIG. 6. Ink 2 filled in an ink pan 1 is supplied from a furnisher roll 3 to a plate cylinder 4, and ink on the surface of the plate cylinder is doctored. After being scraped off at 5, printing is carried out on the film 7 supplied between it and the impression cylinder 6. The ink 8 scraped off from the surface of the plate cylinder by the doctor 5 falls again into the ink pan 1. In the gravure rotary printing press described above, the conventional ink pan has a considerable size, so that the amount of ink to be filled is large, and it is not economical. In addition, when replacing the ink pan several times a day, the replacement work is difficult because the weight is about 20 kg. Accordingly, an object of the present invention is to provide an ink pan which requires a small amount of ink and can be easily replaced. [0004] In order to achieve the above object,
According to the present invention, in a gravure rotary printing machine that supplies ink filled in an ink pan from a furnisher roll to a plate cylinder, and scrapes ink on the surface of the plate cylinder with a doctor before printing on a film, The supply ink pan that supplies ink to the roll and the recovery ink pan that collects the ink scraped from the plate cylinder surface by the doctor are configured separately, making the supply ink pan smaller than the recovery ink pan and placing it on the recovery ink pan. The configuration is such that The ink filled in the supply ink pan is supplied to the plate cylinder from a furnisher roll, and the ink on the surface of the plate cylinder is scraped off by a doctor before printing on a film. The ink scraped from the surface of the plate cylinder by the doctor falls into the collected ink pan. When the plate cylinder is replaced, only the supply ink pan is replaced, and the recovered ink pan is not replaced. Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 10 denotes a supply ink pan, reference numeral 11 denotes a recovered ink pan, and both are configured separately. The supplied ink pan 10 is smaller than the recovered ink pan 11, and the supplied ink pan 10 is mounted on the recovered ink pan 11. It is configured to be placed. 6, the ink 2 filled in the supply ink pan 10 is supplied to the plate cylinder 4 from the finisher roll 3, and the ink on the surface of the plate cylinder is scraped off by the doctor 5, and 6, and prints on the film 7 supplied between them. The ink 8 scraped off from the plate cylinder surface by the doctor 5 falls into the collected ink pan 11. FIGS. 2 and 3 are a plan view and a front view of the supply ink pan 10, respectively. As shown, the inside of the supply ink pan 10 is divided into three regions 13, 14, 1 by a partition plate 12.
5, and the bottom surface of each of the regions 13, 14, 15 is provided with an inclination so as to become gradually lower in the directions of arrows 16, 17, 18. And the area 15
A drain 19 is drilled at the lowest position. As described later, the highest position 20 of the area 13 is the ink supply position. Furnisher roll 3 is area 14
Has been put in. Support legs 21 are provided below both sides of the supply ink pan 10. FIGS. 4 and 5 are a plan view and a front view of the recovered ink pan 11, respectively. Reference numeral 25 denotes an outlet for the ink collected by the collected ink pan 11, and the bottom surface of the collected ink pan 11 is provided with a slope that becomes gradually lower in the direction of the arrow 26 so that the ink flows toward the outlet 25. The support legs 21 of the supply ink pan 10 are provided on both sides of the collection ink pan 11.
A bracket 27 for receiving the lamp is extended. The above-described recovered ink pan 11 is supported on the elevating platform 30, and the supporting legs 21 of the supply ink pan 10 are placed on the bracket 27 of the recovered ink pan 11 so as to be arranged as shown in FIG. A tube 31 is attached to the drain 19 of the supply ink pan 10, and a gutter 32 is attached to the outlet 25 of the collection ink pan 11. And
A tank 34 is installed below the outlet 33 of the gutter 32, and the ink in the tank 34 is circulated by a pump (not shown).
Circulating through the area 5 of the supply ink pan 10
Is supplied to the highest position 20 of the ink. In the printing press having the above-described configuration, the ink in the tank 34 is circulated through the circulation channel 35, and the ink is supplied to the highest position 2 in the area 13 of the supply ink pan 10.
Supply ink to zero. The supplied ink is supplied to the regions 13, 14, 15 in FIG.
Flows slowly in the directions of arrows 16, 17 and 18, and flows down from the drain 19 into the tube 31 when reaching the end point of the region 15. After the ink that has flowed down from the tube 31 is once received by the gutter 32, it falls from the outlet 33 of the gutter 32, enters the tank 34, and is again supplied to the area 13 of the supply ink pan 10 through the circulation channel 35. Thus, the ink 2 supplied to the area 14 of the supply ink pan 10
Is attached to the peripheral surface of the furnisher roll 3 and supplied to the plate cylinder 4 by rotation of the furnisher roll 3. Then, the plate cylinder 4 also rotates, and the ink is scraped off by the doctor 5 before printing on the film 7. On the other hand, the ink 8 scraped off from the surface of the plate cylinder 4 by the doctor 5 falls into the collected ink pan 11. The ink that has fallen into the recovered ink pan 11 flows in the direction of arrow 26 in FIG. 4 due to the inclination of the bottom surface, and is temporarily received by the gutter 32 from the outlet 25,
From the outlet 33 into the tank 34 and into the circulation channel 3
5 to the area 13 of the supply ink pan 10. Thus, as described above, the supply ink pan 1
0 and the recovered ink pan 11, the supply ink pan 10 is reduced in size, and
The ink is circulated by the sufficient inclination of the bottom surface, and the amount of ink used can be reduced by 30% compared with the conventional case. Was. Further, since the supply ink pan 10 is reduced in size, it can be weighed to about 1/2 the weight of the conventional ink pan, so that the labor for replacing the supply ink pan 10 placed on the collection ink pan 11 is significantly reduced. Could be reduced. On the other hand, the recovered ink pan 11 has a film laid on the inner surface, and only the film is replaced when the plate cylinder is replaced.
The ink adhering to the surface of the ink pan can be cleaned only by wiping it with a waste cloth, so that it is not necessary to replace the collected ink pan. According to the present invention, the amount of ink used can be reduced by about 30% by making the supply ink pan and the recovery ink pan separate from each other and reducing the size of the supply ink pan. It is. In addition, by reducing the size of the supply ink pan and placing it on the collection ink pan, only the measured supply ink pan needs to be replaced when the plate cylinder is replaced, so that the replacement work is facilitated. Work effort can be significantly reduced. 【The invention's effect】

[Brief description of the drawings] FIG. 1 is a side view of an ink pan according to an embodiment of the present invention. FIG. 2 is a plan view of a supply ink pan. FIG. 3 is a front view of a supply ink pan. FIG. 4 is a plan view of a recovered ink pan. FIG. 5 is a front view of the recovered ink pan. FIG. 6 is an explanatory view of a conventional ink pan. [Explanation of symbols] 2 ink 3 Furnisher roll 4 plate cylinder 5 Doctor 7 Film 10 Supply ink pan 11 Collection ink pan

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41F 31/06 B41F 9/08 B41F 31/20

Claims (1)

(57) [Claims] [Claim 1] Gravure rotary printing in which ink filled in an ink pan is supplied to a plate cylinder from a furnisher roll, and ink on the surface of the plate cylinder is scraped off by a doctor before printing on a film. In a printing machine, the supply ink pan that supplies ink to the furnisher roll and the recovery ink pan that collects ink scraped from the plate cylinder surface by a doctor are configured separately, and the supply ink pan is made smaller than the recovery ink pan.
The ink pan for a gravure rotary printing press, wherein the ink pan is placed on a collected ink pan.