Ink-conveying trolley of photogravure press

Abstract

The invention discloses an ink-conveying trolley of a photogravure press, comprising a printing roller (2), an ink-conveying roller (3), an ink-conveying roller up-and-down moving device, an ink-conveying roller fore-and-after moving device and a locking mechanism (30); the printing roller (2) is rotatably connected to a printing frame (1); and the ink-conveying roller (3) is rotatably connected to a frame (19) of the ink-conveying trolley. The transmission mechanism also comprises a power device which is connected to the printing frame (1) and respectively connected with the ink-conveying roller fore-and-after moving device and the ink-conveying roller up-and-down moving device by a transmission gear and a sprocket chain; the ink-conveying roller fore-and-after moving device and the ink-conveying roller up-and-down moving device are connected to the frame (19) of the ink-conveying trolley; and the locking mechanism (30) is connected with the printing frame (1). The invention adopting the structure can freely realize the fore-and-after and the up-and-down motion tracks of the ink-conveying roller and can be accurately locked on the printing frame so as to ensure favorable printing quality.

Description

technical field [0001] The invention relates to the field of printing machines, in particular to an ink delivery trolley of a gravure printing machine. Background technique [0002] Gravure printing refers to the printing method in which the inked part of the printing plate is concave, that is, the graphic part of the printing plate is concave, and the blank part is on the same plane as the outer circle of the printing plate cylinder. When printing, the entire plate cylinder is inked, and the ink on the blank part of the plate is scraped off with a squeegee, leaving the ink on the graphic part, and then the paper is passed through, and the impression cylinder is embossed on the back of the paper to make the concave Part of the ink is directly transferred to the paper, and finally the printed matter is piled up or rewound through the receiving part. Similarly, when the combined gravure printing machine is printing, the ink in the ink tank is first transferred to the pits in ...

AI Technical Summary

Problems solved by technology

[0005] 1) After turning and adjusting the hand wheel, the transmission shaft is rotated through the worm gear, so that the gear fixed on the transmission shaft rotates accordingly, and then through the meshing of the gear and rack, the rack drives the ink fountain to move up and down, that is, the ink fountain only It can be adjusted up and down, and the front and rear of the ink fountain can only be realized by moving the position of the inking trolley, and precise positioning cannot be performed. In this way, the trolley is very unstable when the ink fountain is inking, which affects the quality of inking, so that the printing poor effect

[0006] 2) The inking trolley is not equipped with an active rotating inking roller device that can be adjusted inorganically and linked with the speed of the main machine. The inking roller is not installed on the inking trolley, but fixed on the frame of the printing machine Therefore, the ink fountain for ink supply can only move to a fixed position with the trolley, which is very inconvenient to use

[0007] 3) Since the positioning of the inking trolley on the printing machine frame depends on the limit device fixed on the printing machine frame, the locking is realized by the brake casters installed under the frame, but the ink delivery trolley is pushed to a suitable position. The position needs to be constantly adjusted, and it is impossible to precisely lock the ink delivery trolley in the proper position only by the limit device and the brake casters

[0008] 4) Since the ink bucket is fixedly connected to the ink bucket, when the ink is used up and the ink bucket needs to be replaced, the entire ink bucket needs to be pulled out, and then the ink bucket is removed to replace a new ink bucket, which is troublesome to operate. decrease productivity

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