A tilting plate adjustment mechanism based on web rotary printing press

Abstract

The invention relates to an inclined plate adjusting mechanism based on a reel paper rotary printing press. The inclined plate adjusting mechanism comprises an adjusting eccentric ring, a sliding support, an inclined plate adjusting screw rod and the like; the adjusting eccentric ring is installed in a hole of a supporting swing arm at the operation side of a printing plate roller, and one end ofan adjusting limiting pin base penetrates through a kidney-shaped groove in the supporting swing arm on the operation side of the printing plate roller and is fixed together with the adjusting eccentric ring; the sliding support is installed in a sliding groove of the supporting swing arm on the operation side of the printing plate roller, a square nut is clamped in a square groove of the slidingsupport, and the square nut is connected with the inclined plate adjusting screw rod; the inclined plate adjusting screw rod is installed in a lateral round hole of the supporting swing arm on the operation side of the printing plate roller, the front end of an adjusting screw limiting screw is clamped in an annular groove of the inclined plate adjusting screw rod, and the cylindrical end of a shifting pin is fixed to the adjusting eccentric ring; a ball at the other end of the shifting pin is clamped in the groove of the sliding support. The inclined plate adjusting mechanism can be obliquelyand finely adjusted so that the quality requirement of a multi-color overprinting printing product can be guaranteed when oblique overprinting errors are quickly registered.

Description

technical field [0001] The invention relates to the technical field of a web rotary printing machine, in particular to a tilting plate adjustment mechanism based on a web rotary printing machine. Background technique [0002] Printing overprinting means that in multi-color printing, it is required that the graphic printing of each color plate needs to be overlapped and registered, that is, the single-color printing plates with different screen line angles obtained after color separation of the original are overlapped and aligned in sequence according to the color sequence of the printing plate, and finally Printing results in the same level and tone as the original. Accurate overprinting is the most basic requirement in multi-color printing, and overprinting accuracy directly affects the quality of printed products during multi-color printing. If the overprinting precision is high, the dot overprint effect of the printed product is good, the color of the printed product is ...

AI Technical Summary

Problems solved by technology

As for the oblique overprint error, due to the limitation of the cylinder structure of the web rotary printing machine, it is rare to see an oblique register adjustment mechanism on the web rotary printing machine in the market.

When there is an oblique error in the multi-color printing overprint (that is, one side of the printing pattern is registered but the other side cannot be registered), it can only be re-calibrated by removing the installed printing plate on the printing plate cylinder This operation is not only time-consuming and laborious, but also the accuracy of the adjustment will vary greatly due to the different experience of the operator.

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