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Non-roller drum offset machine

A technology of shaftless reel and offset printing press, which is applied in printing presses, rotary printing presses, offset rotary printing presses, etc., can solve the problems of inconvenient adjustment of printing plates, poor printing quality of letterpress printing plates, and complicated connection structure of connecting shafts. and other problems, to achieve the effect of simple structure, good product quality and lower production cost

Inactive Publication Date: 2007-02-14
于金华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The currently used web printing machine mainly includes several parts of machine base, traction motor and printing parts. There are traction reels in front and back of the machine base. The printing parts include printing plate reel and embossing reel, two reels It is close together. The reel in the printing unit and the traction reel on the base are connected by a connecting shaft to each reel and the traction motor to ensure the synchronous rotation of each reel. The printing plate on the drum adopts ordinary letterpress printing; when working, the paper passes between the two drums, and each drum keeps synchronous rotation under the action of the connecting shaft and the drive of the motor. The content will be coated with ink, and the printed content will be printed on the paper through the rotation of the printing plate reel; the above-mentioned reel machine mainly has the following disadvantages: the connection structure of the connecting shaft is relatively complicated, and the printing quality of the letterpress printing plate is relatively high. Not good, the adjustment of the printing plate is inconvenient

Method used

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  • Non-roller drum offset machine
  • Non-roller drum offset machine
  • Non-roller drum offset machine

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Experimental program
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Embodiment Construction

[0011] The five-color web offset printing machine is used as a schematic diagram in the present invention.

[0012] Such as figure 1 , 2 As shown, a shaftless web offset printing machine includes a base 1 and a printing unit 2, and a traction device 10 is provided at both ends of the base 1, and the traction device 10 is powered by a servo motor. The printing unit 2 includes a printing plate cylinder 21, a rubber transfer cylinder 22 and an embossing cylinder 23, the rubber transfer cylinder 22 is provided with a gap 24, and the printing plate on the printing plate cylinder 21 For PS plates, each roll on the printing unit 2 is powered by an independent servo motor.

[0013] Both the traction device and the reel of the present invention are powered by independent servo motors, and each servo motor is controlled by a PLC controller, and the PLC controller controls the operation of each motor through a motion card with an edited program. In this way, the connecting shaft used ...

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PUM

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Abstract

The no-shaft web offset press includes a foundation, a printing assembly, a front drawing assembly and a back drawing assembly. The printing assembly includes a print plate drum with PS plate and a printing drum, and each of the drawing assemblies has independent servo motor for providing power. Between the print plate drum and the printing drum, there is one increased transferring rubber drum with notch. The combination of the print plate drum, the transferring rubber drum and the printing drum is powered with one servo motor controlled by means of one PLC controller. The present invention has the features of simple structure, high printing quality and convenient print plate regulation.

Description

technical field [0001] The invention relates to printing technology, in particular to a shaftless web offset printing machine. Background technique [0002] The currently used web printing machine mainly includes several parts of machine base, traction motor and printing parts. There are traction reels in front and back of the machine base. The printing parts include printing plate reel and embossing reel, two reels It is close together. The reel in the printing unit and the traction reel on the base are connected by a connecting shaft to each reel and the traction motor to ensure the synchronous rotation of each reel. The printing plate on the drum adopts ordinary letterpress printing; when working, the paper passes between the two drums, and each drum keeps synchronous rotation under the action of the connecting shaft and the drive of the motor. The content will be coated with ink, and the printed content will be printed on the paper through the rotation of the printing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F7/02B41F33/16
Inventor 於金华
Owner 于金华