CN2714316Y - B-B type printing machine with double diameter impression cylinder - Google Patents

Abstract

The utility model relates to a B-B type printer with a double-diameter impression cylinder, which comprises a machine frame, a plate cylinder with normal diameter, a paper conveying cylinder, a paper transporting cylinder and a blanket cylinder. The utility model is characterized in that the diameter of the impression cylinder is as twice as the diameter of standard cylinders. The utility model has the advantages that the utility model can cause ink to be sufficiently diverted in printing, can enhance printing quality and can cause paper to not be easily wrinkled.

Description

The B-B type printing machine of two-around impression cylinder

Technical field

The utility model relates to a kind of printing machine, particularly a kind of B-B type printing machine of two-around impression cylinder.

Background technology

What the impression cylinder that at present common B-B type printing machine (perfecting press) upward uses adopted is the impression cylinder of normal diameter, its impression cylinder and plate cylinder and blanket cylinder, transfer roller are same diameter and see Fig. 1, printing ink shifted abundant inadequately when but there was printing in this kind structure, printing points and paper interface point are apart from weak point, influence printing quality, the radius of curvature of secondly single doubly footpath impression cylinder is little, and in press paper is wrinkling easily.

Summary of the invention

The purpose of this utility model is to solve to use the existing problem of single doubly footpath standard impression cylinder in the prior art on the B-B type printing machine, provides a kind of printing ink that can make fully to shift, in press the B-B type printing machine of the two-around impression cylinder that do not crease easily of paper.The utility model designs the B-B type printing machine of two-around impression cylinder, comprises plate cylinder, delivery cylinder, transfer roller, the blanket cylinder of frame, normal diameter, and it is characterized in that: the diameter of impression cylinder is the twice of normal drum diameter.The utility model has the advantages that printing ink is fully shifted, improve printing quality, and in press paper does not crease easily.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated,

Accompanying drawing 1 is the prior art constructions schematic diagram,

Accompanying drawing 2 is a structural representation of the present utility model,

The specific embodiment

Among Fig. 1, the plate cylinder 2 of frame 1, normal diameter, delivery cylinder 3, transfer roller 4, blanket cylinder 5, impression cylinder 6.

Comprise plate cylinder 2, delivery cylinder 3, transfer roller 4, the blanket cylinder 5 of frame 1, normal diameter among Fig. 2, it is characterized in that: the diameter of impression cylinder 6 is the twice of normal drum diameter.Because the enlarged diameter of impression cylinder 6, therefore the tangent printing points of blanket cylinder 5 and impression cylinder 6 to the arc length of transfer roller 4 and the tangent interface point of impression cylinder 6 along length, the printing ink of printing is shifted fully, secondly the multiplication of the diameter of impression cylinder 6 also makes the radius of curvature of its cylinder strengthen, make the paper that is printed along impression cylinder 6 printing process in be not easy wrinkling, also increase simultaneously the operating space of equipment, made things convenient for workman's operation.

Claims (1)

1, the B-B type printing machine of two-around impression cylinder comprises plate cylinder, delivery cylinder, transfer roller, the blanket cylinder of frame, normal diameter, and it is characterized in that: the diameter of impression cylinder is the twice of normal drum diameter.

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