Web Offset Press (YP4787G)

Explain

Designed for newspaper production, Model Model YP4787G Web Offset Press is capable to printing multi-colored or spot-colored newspapers with multi pages. This mach ine runs at high speed and is highly automated and can de arranged flexibly due to its modular design. Consisting of Y type printing units which integrated with its own infeed, and folder(s), this machine may be arranged in several differeent ways according to different requirements.

　　Stucture　　　　　　　　　　　　Printing capacity 　　

one wed standard type　4 pages, 　　

two webs, sigle folder　 8 pages, for two webs one web, wo webs

two folder　　　　　　8 pages, for two webs, one web, three webs

sigle folder　　　           12 pages, for two webs, or three webs

two folder　　　　        12 pages, for two webs, or four webs

two folder　　　　　    16 pages, for two webs, or one web, 　　　　　　　　for two webs, four webs

 two folder　　　　　   20 pages, for two webs or three webs

Parameter

Number of color

4 color one side, 2 color on the other side

Maximum printing area

1050

Web cutoff (mm)

546×787 mm

Plate dimensions (mm)

785×584×0.3 mm

Web width (mm)

787 mm

Maximum printing area (mm)

520×767 mm

Blanket dimensions (mm)

870 x 600 x 1.65

Folding format

8 half-fold

Printing cylinder diameter (mm)

φ173.8

Maximum running speed (rph)

40000 rph

Overall dimensions (mm)

9250×7500×2900 mm

Press net weight (kg) (3 printing units, 1 folder)

50000 kg

Construction features

* The paper feeding mechanism is delow the printing unit making the machine compact;

* The printing unit has six cylinders, which makes it possidle to print two colors on one side of the web and one color on the other;

* The narrow-slot mechanism is adopted on the plate cylinder to make the plate changing quick and convenient, the lateral and circumferential;

* The eccentic ink keys with indicating device make the ink regulating visible and even, The anilox ductor may be thrown off manually, and the for rollers are thrown on-off pneumatically, Theink duct rollers speed is stepless controlled and is able to track with the press speed;

* Brush dampening system works stably and cleanly;

* Magnetic powder brake system makes the web tension control, The non-stop web spling can be performed manually or se`mi-automatically;

* A jaw folder is employed, which is designed to deliver only the half-fold products. A photo-electric counter makes it possible to deliver products once every50or 100 signatures;

* Modular electric control system is employed for the whole machine with the key parts are all imported ones, thus meeting the strict demands to the electric control system and to the reliability, The remote I/O communication technology is adopted for the first time in order to increase its flexibility.